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Out of high school in 2017, Miller showed flashes of the pitcher he could become one day, touching 93-94 mph with a frame that indicated more in the tank as well as a breaking ball that showed above-average potential. Three years later and Miller has started to actualize the potential he showed as a teenager with McHenry (Ill.) High. Now standing 6-foot-5, 220 pounds, Miller entered the 2020 season as a full-time starter for the first time, though he did log plenty of innings (146.2) in a hybrid role in 2018 and 2019. Miller now has a fastball that gets up into the upper 90s consistently, with heavy, sinking life. He pairs that pitch with a hard slider in the upper 80s that can touch 90, a pitch that has flashed plus potential. He’s also got a mid-80s changeup that gives him a third solid pitch, and a curveball that’s fringier. For all of his size and the explosive pure stuff that he’s shown, some scouts wonder what his dominant swing-and-miss offering is going to be. There’s also some reliever risk with Miller, as his delivery and arm action aren’t the smoothest or cleanest, but he has done a nice job holding his stuff deep into his outings and improved his strike-throwing this season. After walking more than four batters per nine innings in 2019, some scouts have put above-average command on Miller. He was trending in the right direction prior to the season ending and fits somewhere at the back of the first or early in the second round after posting a 2.31 ERA in 23.1 innings and four starts as a junior.