SF Giants top prospects: No. 8 — LHP Seth Corry
Highest Level: Class-A (Augusta)
Acquired: Draft (2017)
Future-Value Grade: 45+
As a prep pitcher in Utah, Seth Corry drew comparisons to a young Matt Moore. Back then, he was a two-pitch pitcher who worked off a 90-92 mph fastball and a potential plus curveball. He’s since added a changeup that proved pivotal in a breakout 2019 season.
Corry has missed bats from the onset of his pro career, striking out roughly a batter per inning at each level. However, he tended to walk roughly a batter an inning as well. In his full-season debut in 2019, Corry had a great 2.58 ERA and accrued 69 strikeouts in just 45.1 innings, but he had also issued 36 walks. Then a mechanical adjustment allowed him to take off.
From the start of July to the end of the season, Corry made 11 starts. During that span, he posted a 0.99 ERA in 63.2 innings, struck out 86, and allowed just 16 free passes. He still struggled to keep his pitch counts down and work deep into games, but avoiding walks was a significant step forward.
Corry’s changeup generated a whiff rate of 46% in 2019, and it now has the potential to be another above-average or better pitch. His fastball sits in the low 90s, but it has an above-average spin rate and touches 95 mph occasionally. His curveball, though, remains his best pitch, averaging over 2,600 RPMs and generating whiffs on over 50 percent of swings against it in the South Atlantic League.
Corry has always had a better handle on his offspeed pitches than his fastball, which tends to be a better sign than the reverse. Still, there is a marked difference between control and command. Giants fans have become accustomed to pitching prospects like Andrew Suarez, Shaun Anderson, and Conner Menez, showing low walk-rates in the minors that inflate at the major league level.
2020 was going to be pivotal for Corry’s prospect status. Maintaining his gains in control and taking another step forward with the development of his changeup could have moved him into most top 100 prospect lists by midseason. However, any regression would’ve called his strong 2019 finish into question. Now, that will happen this year.
Corry will go as far as his control will take him. He has the stuff to be a solid mid-rotation arm or lefthanded setup option, but finding consistent mechanics will be pivotal. Some believe Corry will have to move to the bullpen at some point, but those who saw him towards the end of 2019 saw three above-average or better pitches, which should be enough to stick in an MLB rotation.