Shoulder issues and appearances as a reliever make a profile on Carlos Martínez difficult. He reported to spring training vying for a spot in the Cardinals rotation and a path to starting again exists for Martinez. However, as a reliever in 2019, Martinez won four games with 24 saves in 48 games working 48.1 innings with a 53:18 K:BB ratio, a 3.17 ERA, 2.86 FIP and 1.18 WHIP. He led the majors with 21 saves in the second half last year while yielding zero home runs over his last 25 appearances spanning 22.2 innings and 95 total batters faced. 

Last year Martinez recorded a 26.5 strikeout percentage versus a nine percent walk rate. As can be expected, he increased his swinging strike percentage to 12.6 working exclusively as a reliever. With a 74.4 contact percentage, an 85.4 Z-Contact (in the strike zone) percent and a career best 35 O-Swing (outside the strike zone) percentage. 

While it’s apparent Martinez can succeed as a reliever, shifting back to the rotation will...