Zac ThorntonNYM · SP

2026 review

Zac Thornton pitched as a rotation piece whose results outran his stuff, a 3.42 ERA and 1.14 WHIP in 84.1 IP over 15 starts for NYM, with an 18.7 K% and 5.3 BB% over 337 BF. His 5.3 BB% over 337 BF was the 33rd lowest of 517 pitchers with 100+ BF, but his 23.9 CSW% over 1259 pitches was the 46th lowest of that pool. His contract was selected May 20, and he was optioned and recalled in late May and Jun before sticking from Jul 12 on. Taken in just 2 of 674 drafts, a rare pick, he finished 371st of 1472 in the TDK LABS 5x5 value rank and 149th of 811 pitchers, 59th of 236 starters. Against lefties he held hitters to .214/.264/.350 over 110 PA, against righties .265/.310/.455 over 227 PA. His 3.42 ERA ran 1.09 below his 4.51 xERA over 337 BF, and his best month was Jul at a 1.40 ERA in 19.1 IP against a 4.70 ERA in 23.0 IP in Sep. The TDK LABS card had him running a very low ERA with strong strikeout rates in late Jul, then flagged a gap between his results and his underlying skill through early Aug and late Sep, before settling on him as a regular rotation arm with a modest strikeout profile.