Anecdotally speaking, Clayton Kershaw makes any rotation look good. Empirically speaking, that also appears to be the case. Consider: according to the depth-chart projections at this site, the Dodgers currently possess the best rotation in major-league baseball. The San Diego Padres, meanwhile, have the worst. If one were to move Kershaw from LA to San Diego, the Dodgers would rank only 15th in the majors; the Padres would improve to sixth-best overall.
With Kershaw, the Dodgers have gotten a massive head start when it comes to outpacing the rest of MLB rotations. Despite contending with frequent injury problems over the last five season, the Dodgers have spent their way to one of the top-five rotations in baseball thanks to Clayton Kershaw plus a near-endless supply of arms. This season is unlikely to be any different.
Back in 2014, the Dodgers had a mostly healthy rotation, with Kershaw, Zack Greinke, Hyun-Jin Ryu, Dan Haren, and Josh Beckett all recording at least 20 starts. The first four members of that group took the mound in 117 of the team’s games that season. Beckett added another 20, while seven other pitchers split the remaining 25 starts. That offseason, however, Beckett retired. The Dodgers paid Dan Haren to pitch for Miami, trading both him and Dee Gordon to the Marlins in a deal that ultimately netted them Howie Kendrick. To replace those two spots, the team signed Brandon McCarthy to a four-year deal and took a $10 million flyer on Brett Anderson. McCarthy and Ryu got hurt, Anderson pitched quite well, and the team ended up using 16 starters — or, essentially 13 different pitchers to fill out the final two rotation spots.
The chart below illustrates how many starters each major-league team used in 2015.

Led by Kershaw and Greinke, the 17.7 WAR produced by the Dodgers rotation represented the third-highest mark in the majors — this, despite the club having been compelled to use more starters than any other team in the league. Including the $40 million the team spent to acquire Alex Wood — including the signing bonus of Hector Olivera and the money added by Mike Morse and Bronson Arroyo — as well as the 15 cents for every dollar that went to the luxury tax, the Dodgers spent roughly $150 million to record those 17.7 wins, a pretty inefficient $8.8 million per WAR.
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