During his pro baseball career, Shields has surrendered 2,581 base hits while tallying 2,234 strikeouts in 2,616 innings. He has conceded a total of 1,167 earned runs while holding a WHIP of 1.272 and a FIP of 4.0. He has a K/BB ratio of 2.99 and he has faced 10,993 opposing batters so far in his career. Shields (145-139 career win-loss record) has earned a 4.01 ERA and has allowed 8.9 hits per 9 innings.
