Tyler Glasnow, RHP, Pittsburgh Pirates
76.1 IP, 2.48 ERA, 110/43 K/BB, 13.0 K/9 (17 GS)
Arguably the top breakout prospect among minor-league pitchers this season, Glasnow, a 6’7” right-hander, was nearly unhittable in his last outing: 6.0 IP, 3 H, 7/1 K/BB.
Steven Matz, LHP, New York Mets
76.0 IP, 2.25 ERA, .215 BAA, 83/25 K/BB (15 GS)
Although he was a second-round pick in 2009, Matz, 22, is just now making his full-season debut and has put up solid numbers against younger hitters. He’s actually been more effective against right-handed hitters this season: 60.1 IP, 1.94 ERA, .202 BAA, 66/16 K/BB. The numbers from his last 10 starts, which included a complete-game shutout, look like this: 54.2 IP, 2.30 ERA, .200 BAA, 58/18 K/BB.
Mark Appel, RHP, Houston Astros
9.0 IP, 8 H, 2 ER, 9/1 K/BB (3 GS)
This year’s No. 1 overall pick was sharp on Sunday during his debut for Low-A Quad Cities, allowing only two hits over four scoreless frames with three strikeouts and one walk.
C.J. Edwards, RHP, Texas Rangers
87.2 IP, 1.95 ERA, .192 BAA, 113/31 K/BB (17 GS)
Edwards is Tyler Glasnow’s competition for the top breakout pitching prospect this season. The 21-year-old right-hander has been dominant over his last 10 starts: 52.0 IP, 1.73 ERA, .200 BAA, 74/21 K/BB.
Dylan Baker, RHP, Cleveland Indians
94.0 IP, 3.26 ERA, .216 BAA, 73/39 K/BB (17 G/16 GS)
The top junior college pitcher in the 2012 draft class, Baker has a heavy plus fastball but inconsistent command of his secondaries. In general, control can be an issue for him. After a rough first month of the season, the right-hander has improved in each subsequent month, and he has pitched especially well over his last six games: 37.0 IP, 15 H, 2 ER, 30 K/15 BB.
Ryan Dull, RHP, Oakland Athletics
39.2 IP, 1.82 ERA, .158 BAA, 58/4 K/BB, 16 SV (30 G)
The undersized right-hander flat-out misses bats and has now posted a ridiculous 105/13 K/BB in 71.1 innings in two professional seasons. Dull has been dealing for High-A Stockton following a promotion in late June, and he could be on the fast track to the major leagues.
Lance McCullers, RHP, Houston Astros
77.1 IP, 3.03 ERA, 87/35 K/BB (20 G/14 GS)
While McCullers’ overall body of work this season has been impressive, the hard-throwing right-hander has struggled over his last three starts: 11.2 IP, 20 H, 12 ER, 12/7 K/BB.
Jose Berrios, RHP, Minnesota Twins
68.2 IP, 3.93 ERA, 76/23 K/BB (13 GS)
After registering a 1.17 ERA with 49/4 K/BB in 30.2 innings during his professional debut last year, Berrios opened his full-season debut this year with a 2.31 ERA in April and 2.63 ERA in May. However, inconsistent command has led to a dip in the 19-year-old’s performance in recent weeks. Also, the discrepancy in his numbers against left-handed hitters (2.02 ERA, .254 BAA in 35.2 IP) and right-handed hitters (6.00 ERA, .305 BAA in 33 IP) this season is staggering.