During his career, Tewksbury has allowed 2,043 base hits while earning 812 strikeouts in 1,807 innings. He has allowed 787 ER’s while holding a WHIP of 1.292 and having a FIP of 3.9. His strikeout to walk ratio is 2.78 and he has gone up against 7,623 hitters during his career. Tewksbury (110-102 record in his career) has a 3.92 ERA and has allowed 10.2 hits per 9 innings.