Drafted in the 4th round (125th overall) by the Seattle Mariners in 2015 (signed for $585,000).
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Thompson is an athletic righthander who pitches in the low 90s and shows some feel for a breaking ball and changeup. He came on strong in the fall, and had an impressive outing at the WWBA World Championship in Jupiter. Thompson can reach 93 mph with his heater. He is committed to Coastal Carolina.
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In 2015, Thompson became the first player drafted out of Myrtle Beach's Socastee High after posting a 5-1, 1.28 record with 58 strikeouts in 44 innings. He bypassed a commitment to Coastal Carolina to sign for an above-slot $585,000 bonus as the 125th overall pick. Thompson had a stellar debut in the Rookie-level Arizona League and would have ranked among the leaders in ERA had he qualified. He left the team in mid-August to be with his family as his father battled cancer. Thompson earned praise as much for his approach and maturity as his stuff. He produces a low-90s fastball that tops out at 93 mph out of a smooth and repeatable delivery. He can locate the pitch to both sides of the plate and keeps hitters off-balance nicely with a slider that he's getting a feel for but has good, three-quarters tilt at its best. His changeup is a work in progress. Thompson brings an advanced approach for a pitcher his age that makes his stuff play up. He'll likely open next season at short-season Everett with a shot to move up to low Class A Clinton.
Minor League Top Prospects
A favorite sleeper of scouts who saw the league, Thompson has a better chance to stay in the rotation than other high school pitchers debuting in the AZL this year. A fourth-rounder who signed for $585,000, Thompson has a little more present polish and a nice, repeatable delivery to go with solid stuff. He gets swings and misses with all of his pitches, moves the ball in and out and changes speeds well. Thompson throws his fastball at 91-92 mph, and his high-70s slider, which has some bite and sweepy shape, projects as an average offering. He also throws a changeup in the low 80s. Thompson pitched well in his pro debut and impressed the Mariners staff with his attitude and demeanor on the mound. "He's such a competitor," Mariners manager Darrin Garner said. "You don't see that from a young kid."
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