Corey Kluber 2021 Outlook in Fantasy Baseball Talk Posted 15 hours ago 7 minutes ago, JE7HorseGod said: All you need to do is check the career splits by month. https://www.baseball-reference.com/players/split.fcgi?id=klubeco01&year=Career&t=p Everything is worse in March/April. ERA, WHIP, K/9, K/BB, O -Swing, Z-swing, avg velocity. He did it pretty much every year from about 2013 on, except for, as you say 2018, and of course last year. Splits don't tell the whole story. Analyzing game logs tells the real story. One or two blow ups combined with some gems can skew an entire month.