Jeff Samardzija and Joe Kelly both finish with a 1.35 WHIP on the season.Kelly: 10-5, 2.69 ERA, 5.8 K's / 9Samardzija: 8-13, 4.34 ERA, 9 K's / 9
I didn't think my post either credited or maligned anyone.
Another factor could be that one pitches on a team that is substantially better defensively and offensively than the other one.