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Seth Lonsway

#50 | LHP | GiantsSF
ACL Giants Orange ACL Giants Orange
Seth Lonsway
Name: Seth Joseph Lonsway
Born: Oct 7, 1998 in St. Mary's, OH
High School: Celina (Ohio) HS
College: Ohio State
Ht.: 6'0" / Wt.: 195 lbs
Bats: L / Throws: L
 IPERAWHIPBB/9SO/9
Career57.201.000.0018.00
202157.201.000.0018.00
Drafted in the 6th round (176th overall) by the San Francisco Giants in 2021 (signed for $297,500)
Lonsway showed markedly improved stuff during the shortened 2020 season and ranked as the No. 74 prospect in the class, but questions about his control ultimately made him go undrafted. This spring has been more of the same from the 6-foot-3, 195-pound lefthander, as he’s had no issues striking out batters, with 98 in just 68 innings (13.0 K/9), but those whiffs have come alongside 43 walks (5.7 BB/9). The fact that his walk rate this spring represents a career low tells you what you need to know about Lonsway’s control. However, he can run his fastball up into the mid 90s from the left side and many scouts thought his curveball was one of the better breaking balls in the 2020 class. It’s at least a plus offering and some evaluators have put 70 grades on the pitch, which lands in the upper 70s and low 80s with hard biting action when he stays on top of it—generating ugly swings out of the zone against both righties and lefties. Lonsway also throws a slider that can blend into his curve at its lower velocity, and a changeup in the lower 80s which he rarely uses. While Lonsway has made some progress to improve his strike throwing this spring, he still has well below-average control and struggles to repeat his delivery and stay in sync on the mound. That means he’s most likely destined for the bullpen at the next level, where his velocity could tick up and his curveball should be a reliable weapon.
Career Statistics
  • Career Statistics
  • 2021 Game Logs
  • 2021 Splits
  • Spring Training
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Split TypeAVGGABRH2B3BHRRBIBBSOOBPSLGOPS
Split TypeWLERAGGSSVIPHRERHRBBSOAVGOBPSLGWHIP
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