Adam Mazur Stats & Scouting Report

IP	33.2
ERA	7.49
WHIP	1.81
BB/9	5.61
SO/9	5.88

Full name Adam McKinnlee Mazur
Born 04/20/2001 in St. Paul, MN
Profile Ht.: 6'2" / Wt.: 180 / Bats: R / Throws: R
School Iowa
Drafted in the 2nd round (53rd overall) by the San Diego Padres in 2022 (signed for $1,250,000).

View Draft Report

The Woodbury, Minn., native began his trek up draft boards last summer while competing in the Cape Cod League. In six starts, Mazur posted a 3-0 record, striking out 34 in 29 innings while only surrendering six walks. He transferred to Iowa from South Dakota State for 2022, and the lanky, 6-foot-3, 175-pound righthander has dazzled this spring. Mazur’s 7-3 record in 15 starts included 98 strikeouts in 93.2 innings pitched. In a year where Tommy John surgery cast a cloud over some of the top pitching prospects in the class, the Hawkeyes ace began to draw bigger scouting crowds with each start, impressing with his pitching maturity and ability to command a four-pitch mix. Mazur has a loose, free and easy motion in his delivery that he repeats well, releasing the ball from a three-quarter slot. Mazur’s fastball sits 92-94 mph and gets up to 97, and he likes to move it around the zone. He pitches inside just enough to keep hitters honest and guessing. Mazur complements his fastball with an above-average offspeed mix that baffles both lefthanded and righthanded hitters. His 76-79 mph curveball is sharp and traditional in its break. The 12-to-6 action has frozen its fair share of hitters this spring, and it’s a weapon he will use any time in the count. His slider plays well off his curveball, as it is similar in shape out of the hand except for the darting three-quarter action that runs away from righthanded hitters. Mazur will mix in a solid-average changeup to lefthanded hitters. It sits in the 82-84 mph range with occasional downward fade. He does have a tendency to slow his arm speed down to take velocity off of it. The results are positive when he properly executes his changeup, but it may have to be fine-tuned at the next level. Mazur has a solid foundation with command that should only get better. He will have to work hard to add size and strength to his frame. Mazur is expected to come off the board as early as the second round in July. With projection left, scouts believe his best days are ahead of him, and he could move quickly as he adapts to the pro game.

Top Rankings

Organization Prospect Rankings

BA Grade/Risk: 45/Medium.

Track Record: Mazur had a fantastic platform season at Iowa in 2022, winning Big Ten Conference pitcher of the year. The Padres drafted him in the second round, and Mazur had a strong first full season in 2023 before struggling in 2024. He made his major league debut in 2024 but was tagged for a 7.49 ERA in 33.2 innings. The Padres traded Mazur to the Marlins in the deadline deal for relievers Tanner Scott and Bryan Hoeing.

Scouting Report: Mazur is lean and wiry with an athletic, whippy delivery. His extreme trunk tilt leads to a true overhand slot. His 93-97 mph fastball has some ride but is otherwise straight. His best secondary is a low-80s curveball with solid depth. He also relies heavily on a hard, short slider. The slider is a decent option to get hitters off his fastball, but it has neither the bite nor the depth to be a true swing-and-miss offering. He rounds out his repertoire with a firm changeup, often around 88-90 mph, but it lacks separation or movement. Mazur’s best quality by far is his premium strike-throwing. He attacks the zone relentlessly with all offerings. Though the command of his secondaries is more about either landing them in the zone or burying them, he can locate his fastball to precise quadrants of the zone.

The Future: Mazur projects as a reliable, strike-throwing fourth or fifth starter. His feel for four pitches should allow him to hang in a rotation, but he doesn’t have the knockout secondaries to be an upper-half starter. Mazur is the most major league-ready of Miami’s strong collection of young pitching prospects. He didn’t get a crack at the big leagues with Miami in 2024, but he should get a chance in 2025 with a chance to make the Opening Day roster.

Scouting Grades Fastball: 55 | Curveball: 50 | Slider: 40 | Changeup: 30 | Control: 70
BA Grade: 50/High

Track Record: Mazur began moving up draft boards with an impressive stay as an all-star in the Cape Cod League, where he posted a 1.55 ERA and 0.83 WHIP with 34 strikeouts in 29 innings in 2021. He followed up as the Big Ten Conference pitcher of the year in 2022, when the Padres went slightly under slot to sign him for $1.25 million as the 53rd overall pick. Mazur made his professional debut in 2023 in the High-A Midwest League and finished a standout first full year in pro ball in Double-A San Antonio’s postseason rotation.

Scouting Report: Mazur added 10 pounds after signing and could probably still stand to add mass if he’s going to withstand a starter’s workload. His fastball sits 92-96 mph, and his tight slider has been up to 90 mph in becoming a plus power pitch. Mazur also has a mid-80s changeup with two-seam action and armside life as well as a 12-to-6 curveball that keep hitters off-balance. Both breaking pitches fetch swings and misses in and out of the zone. It all comes together out of a loose, easy delivery with a three-quarters arm slot that adds deception to the total package. Mazur also boasts a double-plus ability to fill up the zone. It’s everything you want in a starter. Mazur’s stuff figures to play up even more if he falls into a bullpen role, and the Padres experimented with that look a bit after his promotion to San Antonio while managing his workload in his first full year as a pro. Mazur has projection left in his wiry build.

The Future: The Padres need homegrown options in the upper levels, and Mazur has done nothing but thrive so far in the system. He looks to return to Double-A to build upon last year’s innings base and see if he can indeed develop into a midrotation starter.

Scouting Grades Fastball: 55 | Curveball: 50 | Slider: 60 | Changeup: 50 | Control: 70
BA Grade/Risk: 50/High

Track Record: Mazur logged a 5.50 ERA over two years at South Dakota State, but he began to turn things around with a standout showing in the Cape Cod League after his sophomore year. He transferred to Iowa for his junior season in 2022 and went 7-3, 3.08 with a .178 opponent's batting average, seventh in the nation, en route to winning Big Ten Conference pitcher of the year honors. The Padres drafted Mazur in the second round, No. 53 overall, and signed him for an under-slot $1.25 million. He did not appear in a regular-season game after signing but pitched in instructional league.

Scouting Report: The rare college pitcher who still had physical projection left, Mazur has already added 10 pounds of muscle since signing and has seen his stuff tick up. His fastball sat between 92-94 mph and topped out at 97 during the college season but now touches 99 out of a loose, easy delivery. His slider has jumped to 87-90 mph with added power to become a plus pitch, and his changeup has ticked up to 84-86 mph with enhanced two-seam action and armside life to become an average pitch. He also has an average 12-to-6 curveball he will throw to keep hitters off-balance. Mazur repeats his delivery and three-quarters arm slot well and has made progressive strides with his control. He cut his walk rate from 5.3 per nine innings as a freshman to 4.1 as a sophomore to 2.9 as a junior and projects to have average control.

The Future: Mazur is advanced enough to make his pro debut at High-A Fort Wayne in 2023. He has to prove he can maintain his enhanced stuff over a full season, but he has a chance to be a No. 3 or 4 starter. His plus slider could play in the bullpen if his other secondaries stall.

Scouting Grades: Fastball: 55. Curveball: 50. Slider: 60. Changeup: 50. Control: 50

Draft Prospects

School: Iowa Committed/Drafted: Never Drafted
Age At Draft: 21.3
BA Grade: 50/High
Scouting Grades: Fastball: 50 | Curveball: 55 | Slider: 60 | Changeup: 45 | Cutter: | Control: 55
The Woodbury, Minn., native began his trek up draft boards last summer while competing in the Cape Cod League. In six starts, Mazur posted a 3-0 record, punching out 34 in 29 innings while only surrendering six walks. He transferred to Iowa from South Dakota State for 2022, and the lanky, 6-foot-3, 175-pound righthander has dazzled this spring. Mazur’s 7-3 record in 15 starts includes 98 strikeouts in 93.2 innings pitched. In a year where Tommy John surgery has cast a cloud over some of the top pitching prospects in the class, the Hawkeye’s ace began to draw bigger scouting crowds with each start, impressing with his pitching maturity and ability to command a four-pitch mix. Mazur’s delivery is a loose, free and easy motion that he repeats well, releasing the ball from a three-quarter slot. Mazur’s fastball sits 92-94 mph and gets up to 97, and he likes to move it around the zone. He pitches inside just enough to keep hitters honest and guessing. Mazur complements his fastball with an above-average offspeed mix that baffles both lefthanded and righthanded hitters. Mazur’s 76-79 mph curveball is sharp and traditional in its break. The 12-to-6 action has frozen its fair share of bats this spring, and it’s a weapon he will use any time in the count. His slider plays well off his curve, as it is similar in shape out of the hand except for the darting three-quarter action that runs away from righthanded hitters. Mazur will mix in a solid-average changeup to lefthanded hitters. It sits in the 82-84 mph range with occasional downward fade. He does have a tendency to slow his arm speed down to take velocity off of it. The results are positive when properly executed, but it may have to be fine tuned at the next level. Mazur has a solid foundation with his command that should only get better. He will have to work hard to add size and strength to his frame. Mazur is expected to come off the board as early as the second round in July. With projection left, scouts believe his best days are ahead and he could move quickly as he adapts to the pro game.

Scouting Reports

BA Grade/Risk: 50/High

Track Record: Mazur logged a 5.50 ERA over two years at South Dakota State, but he began to turn things around with a standout showing in the Cape Cod League after his sophomore year. He transferred to Iowa for his junior season in 2022 and went 7-3, 3.08 with a .178 opponent's batting average, seventh in the nation, en route to winning Big Ten Conference pitcher of the year honors. The Padres drafted Mazur in the second round, No. 53 overall, and signed him for an under-slot $1.25 million. He did not appear in a regular-season game after signing but pitched in instructional league.

Scouting Report: The rare college pitcher who still had physical projection left, Mazur has already added 10 pounds of muscle since signing and has seen his stuff tick up. His fastball sat between 92-94 mph and topped out at 97 during the college season but now touches 99 out of a loose, easy delivery. His slider has jumped to 87-90 mph with added power to become a plus pitch, and his changeup has ticked up to 84-86 mph with enhanced two-seam action and armside life to become an average pitch. He also has an average 12-to-6 curveball he will throw to keep hitters off-balance. Mazur repeats his delivery and three-quarters arm slot well and has made progressive strides with his control. He cut his walk rate from 5.3 per nine innings as a freshman to 4.1 as a sophomore to 2.9 as a junior and projects to have average control.

The Future: Mazur is advanced enough to make his pro debut at High-A Fort Wayne in 2023. He has to prove he can maintain his enhanced stuff over a full season, but he has a chance to be a No. 3 or 4 starter. His plus slider could play in the bullpen if his other secondaries stall.

Scouting Grades: Fastball: 55. Curveball: 50. Slider: 60. Changeup: 50. Control: 50
BA Grade/Risk: 50/High

Track Record: Mazur logged a 5.50 ERA over two years at South Dakota State, but he began to turn things around with a standout showing in the Cape Cod League after his sophomore year. He transferred to Iowa for his junior season in 2022 and went 7-3, 3.08 with a .178 opponent's batting average, seventh in the nation, en route to winning Big Ten Conference pitcher of the year honors. The Padres drafted Mazur in the second round, No. 53 overall, and signed him for an under-slot $1.25 million. He did not appear in a regular-season game after signing but pitched in instructional league.

Scouting Report: The rare college pitcher who still had physical projection left, Mazur has already added 10 pounds of muscle since signing and has seen his stuff tick up. His fastball sat between 92-94 mph and topped out at 97 during the college season but now touches 99 out of a loose, easy delivery. His slider has jumped to 87-90 mph with added power to become a plus pitch, and his changeup has ticked up to 84-86 mph with enhanced two-seam action and armside life to become an average pitch. He also has an average 12-to-6 curveball he will throw to keep hitters off-balance. Mazur repeats his delivery and three-quarters arm slot well and has made progressive strides with his control. He cut his walk rate from 5.3 per nine innings as a freshman to 4.1 as a sophomore to 2.9 as a junior and projects to have average control.

The Future: Mazur is advanced enough to make his pro debut at High-A Fort Wayne in 2023. He has to prove he can maintain his enhanced stuff over a full season, but he has a chance to be a No. 3 or 4 starter. His plus slider could play in the bullpen if his other secondaries stall.

Scouting Grades: Fastball: 55. Curveball: 50. Slider: 60. Changeup: 50. Control: 50
BA Grade: 45/High

August Update: The Woodbury, Minn., native began his trek up draft boards last summer while competing in the Cape Cod League. In six starts, Mazur posted a 3-0 record, punching out 34 in 29 innings while only surrendering six walks. He transferred to Iowa from South Dakota State for 2022, and the lanky, 6-foot-3, 175-pound righthander has dazzled this spring. Mazur&#39s 7-3 record in 15 starts includes 98 strikeouts in 93.2 innings pitched. In a year where Tommy John surgery has cast a cloud over some of the top pitching prospects in the class, the Hawkeye&#39s ace began to draw bigger scouting crowds with each start, impressing with his pitching maturity and ability to command a four-pitch mix. Mazur&#39s delivery is a loose, free and easy motion that he repeats well, releasing the ball from a three-quarter slot. Mazur&#39s fastball sits 92-94 mph and gets up to 97, and he likes to move it around the zone. He pitches inside just enough to keep hitters honest and guessing. Mazur complements his fastball with an above-average offspeed mix that baffles both lefthanded and righthanded hitters. Mazur&#39s 76-79 mph curveball is sharp and traditional in its break. The 12-to-6 action has frozen its fair share of bats this spring, and it&#39s a weapon he will use any time in the count. His slider plays well off his curve, as it is similar in shape out of the hand except for the darting three-quarter action that runs away from righthanded hitters. Mazur will mix in a solid-average changeup to lefthanded hitters. It sits in the 82-84 mph range with occasional downward fade. He does have a tendency to slow his arm speed down to take velocity off of it. The results are positive when properly executed, but it may have to be fine tuned at the next level. Mazur has a solid foundation with his command that should only get better. He will have to work hard to add size and strength to his frame. With projection left, scouts believe his best days are ahead and he could move quickly as he adapts to the pro game.

Career Transactions

Miami Marlins recalled RHP Adam Mazur from Jacksonville Jumbo Shrimp.
Jacksonville Jumbo Shrimp activated RHP Adam Mazur.
RHP Adam Mazur assigned to Jacksonville Jumbo Shrimp.
Miami Marlins reassigned RHP Adam Mazur to the minor leagues.
Miami Marlins traded LHP Tanner Scott and RHP Bryan Hoeing to San Diego Padres for RHP Adam Mazur, 2B Jay Beshears, LHP Robby Snelling and 3B Graham Pauley.
El Paso Chihuahuas activated RHP Adam Mazur.
San Diego Padres optioned RHP Adam Mazur to El Paso Chihuahuas.
San Diego Padres recalled RHP Adam Mazur from El Paso Chihuahuas.
San Diego Padres optioned RHP Adam Mazur to El Paso Chihuahuas.
San Diego Padres recalled RHP Adam Mazur from El Paso Chihuahuas.
San Diego Padres optioned RHP Adam Mazur to El Paso Chihuahuas.
San Diego Padres selected the contract of RHP Adam Mazur from El Paso Chihuahuas.
El Paso Chihuahuas activated RHP Adam Mazur.
RHP Adam Mazur assigned to El Paso Chihuahuas from San Antonio Missions.
RHP Adam Mazur assigned to San Antonio Missions from Fort Wayne TinCaps.
San Antonio Missions activated RHP Adam Mazur.
RHP Adam Mazur assigned to San Antonio Missions from Fort Wayne TinCaps.
Fort Wayne TinCaps activated RHP Adam Mazur.
Fort Wayne TinCaps transferred RHP Adam Mazur to the Development List.
RHP Adam Mazur assigned to Fort Wayne TinCaps from ACL Padres.
RHP Adam Mazur assigned to ACL Padres from Padres Organization.