I made a bold and stupid comment on the gameday thread about 5 innings pitched being a "quality start" which by definition it is not. My line of thought yesterday was how the game of baseball has really changed over even just the past 10 years. Relievers are going longer and Starters are more and more throwing fewer innings. It's actually amazing to think how much more starters make than relievers in free agency given this closing gap (market inefficiency???).
My point was, in today's game, I don't think the Sox starters only going 5 innings or so is what is hurting this team. As a matter of fact, the best team in all of baseball with one of the better pitching staffs the Tampa Bay Rays does not do any better. Their starting pitchers only average 4.65 innings per game, and the Boston staff is averaging just over 5.05 innings pitched. For some perspective, I decided to look at a few other teams with great pitching staff as well.
Houston 5.5 IP per game
Minn. 5.6 IP per game
Texas 5.75 IP per game
ATL 5.25 IP per game
TB 4.65 IP Per game
Boston 5.05 IP Per game
I figured it fair to look up some of the other awful pitching staffs as well.
Oak 4.70 IP per game
COL 4.65 IP per game
Cinn 4.84 IP per game
Sox seem to be middle of the pack, but there is some relationship (which is obviously predictable here) that teams with better-starting rotations will have starters that throw more innings. What I want to know is, how much of that benefits the team in today's game, or how much of that is just a function of how well the rotation performs? probably a bit of both. But despite that relationship, you see teams like Tampa Bay that have starters who do not go many innings but they still have great pitching year in and year out. So how strong is it?. The Sox seem to average between 1/3 and 2/3 of an inning less per game than the best pitching staffs in all of baseball. Is needing those extra 1 - 2 outs a game the difference between one of the best pitching staffs and one of the worse? I think it might just all come down to the fact that the starting pitching overall has not been good. They've shown glimmers of hope, but they have yet to hit the ground with all cylinders firing at once.
It will be interesting to see how guys like Kluber and Pivetta do in the bullpen because the Sox need guys in there that can give you multiple-inning relief outings. That guy has so much more value in today's game. Earlier in the year I would have figured those guys to have been some combination of Houck/Whitlock/Paxton/Crawford but now you have to take Houck/Whitlock out of the left side of the equation and add in Pivetta/Kluber/Wink to the right side.
Sox are obviously hoarding depth at the MLB level because they don't have a lot of pitching depth in the minors, not at the AAA level at least. The point is, they can't wait too long on guys like Kluber and Pivetta out of the pen, especially if you're going to need your pen 3 1/3 to 4 innings most nights. The Tampas model works because they have that depth at the MLB level year after year and they perform.