What Jon Lester Has Left
Jon Lester’s experience in the postseason has been marked mostly by success. He’s made 21 career playoff starts and recorded a few important relief outings, too. In those games, he’s produced a 2.55 ERA and 3.62 FIP. In five World Series starts (plus one relief outing), Lester has pitched 35.2 innings, struck out 34, walked just eight, and conceded only eight runs (seven earned). He’s what one might characterize as a “big-game pitcher.”
The thing about so-called big-game pitchers, however, isn’t so much that they rise to important occasions, but rather that they simply replicate the performances that have brought them to the big stage in the first place. For over a decade, Lester has done just that. Tonight, however, the Cubs might require a little bit more of Lester.
In 2,366 regular-season innings over more than a decade, Lester has produced a 3.61 FIP. In 148 postseason innings, the 34-year-old lefty has a 3.62 FIP. Look at some of his other stats from the regular season and playoffs over the course of his career.
| Period | IP | K% | BB% | GB% | IFFB% | HR/FB | HR/9 | ERA | ERA- | FIP | FIP- |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Reg Season | 2366 | 22.3 % | 7.8 % | 46.2 % | 11.1 % | 10.4 % | 0.88 | 3.50 | 82 | 3.61 | 88 |
| Postseason | 148 | 21.1 % | 6.6 % | 44.1 % | 11.7 % | 10.3 % | 0.91 | 2.55 | 61 | 3.62 | 89 |
The numbers for Lester are pretty much the same across the board in the regular season and playoffs. His postseason ERA is lower than his regular-season mark due mostly to the .241 BABIP he’s recorded in the former. His slightly lower strikeout and walk numbers indicate that hitters have made more contact against Lester in the postseason, although it’s quite possible that some of that contact has been of the weaker variety if batters have traded in strikeout avoidance for power.

