The Rays’ Modified Four-Man Rotation

(Photo: Keith Allison)
The prospect of a six-man rotation has either been discussed or confirmed by a number of clubs this offseason. The Angels will use one to help ease along Shohei Ohtani’s development as a pitcher. The Rangers also have plans to experiment with one (although Cole Hamels isn’t an advocate). Mickey Callaway mentioned at the beginning of February that the Mets might utilize six starters at points of the season.
The Rays, as they often do, are trying something different. In this case, they’ve announced plans to use just a four-man rotation in 2018.
#Rays Cash just said they could go with 4-man rotation all season, filling in with bullpen guys when needed to start
— Marc Topkin (@TBTimes_Rays) March 7, 2018
Given trends going in the opposite direction, this plan could lead to disaster, although it isn’t clear that the five-man rotation is obviously superior. Tampa Bay is in a fairly unique personnel situation, so there’s some logic behind the decision. The move isn’t likely to work, but it might be worth a shot.
When discussing the possibility of the Los Angeles Angels’ use of a six-man rotation, I noted the importance of having starting pitching depth and no ace. To effectively deploy a four-man rotation, the opposite is true; indeed, it’s the presence of an ace and little rotation depth behind him that give rise to the unique possibility. A team also requires a deep bullpen and multiple players with minor-league options, so that, whatever starting depth the club does possess, can be easily moved back and forth between the majors and minors.



