Are you talking about back to back days or back to back games? May have missed one, but could only find 4 times that Hader pitched back to back days (4/21-/22, 6/26-6/27, 8/4-8/5, and 8/29-8/30). If my math is correct he threw a total of 5 innings in those 4 games (the 2nd game), gave up 1 ER, 3H, 2BB, and 8 K. Also in the preceding game he only threw a full inning once (on 4/21), the other 3 preceding games he threw 1/3 of an inning, 1/3 of an inning, and 2/3 of an inning. Burnes 2nd day stats are 3 2/3 IP, 1 ER, 3 H, 0 BB, 2 K I was going off the "days rest" table on Baseball Reference which I believe is calendar days. Looking at Hader's game log he pitched back to back days on: April 21, 22 June 26, 27 Aug 4,5 Aug 19,20 Aug 29,30 I also only counted up four the first time I looked at it. Missed one of the August ones. https://www.baseball-reference.com/players/gl.fcgi?id=haderjo01&t=p&year=2018 Ah, yes, missed the August 19-20 days, and he pitched a full inning on Aug 19 and then came back with a 1-2-3 3K inning on the 20th.