Jon Lester has been an on-again, off-again ace for the Cubs since his acquisition last offseason.
The Cubs’ $155 million man was worth the investment in May and July of this season. He went 4-1 with a 1.76 ERA in May and 2-2 with a 1.66 ERA in July.
His ERA in April, June and August, though? Respectively: 6.23, 5.74 and 6.32.
Lester has been awful every other month and unhittable the rest of the time.
ESPN made light of his struggles in this graph, featuring a blue “W” that’s familiar to Cubs fans:
Normally a blue "W" is a good sign for the @Cubs; but not when it's in the form of Jon Lester's ERA by month: pic.twitter.com/n2qmEL4OIy
— ESPN Stats & Info (@ESPNStatsInfo) August 20, 2015
The good news for Cubs fans is that Lester should be back on his game in the final month of the season, when the Cubs are in the final weeks of a playoff race.
The bad news? Lester would cool again when the playoffs actually begin.
