Drafted in the 13th round (410th overall) by the Colorado Rockies in 2010.
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Mueller won 14 games in his first two seasons at Eastern Illinois, then proved himself with a strong summer in the Cape Cod League. He came out throwing 90-95 mph with a good three-quarters breaking ball in his first start of the spring, but two weeks later he was down to 83-87. Shoulder weakness was the culprit, and it knocked him out for a month. Since returning, the 6-foot-4, 215-pounder has worked at 88-92 mph and with less downward angle and life than before. He also has struggled to hold his velocity out of the stretch. His No. 2 pitch is more of a low-80s slider now. His changeup has its moments but lacks consistency. A fully healthy Mueller might have gone in the first three rounds of the draft, but he now figures to go between the fourth and sixth.
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