Jake Arrieta, Not Jon Lester, Will Be Cubs’ Real Ace in 2015

Thirteen games into the season, an ace has emerged for the Chicago Cubs, and his name isn't Jon Lester.

Through three starts, Lester—the offseason's big free-agent fish—has surrendered 12 runs and 24 hits in 15.2 innings. It's a small sample, and odds are the battle-tested left-hander will put up his usual solid numbers when all is said and done.

So far, though, Jake Arrieta is carrying the load in the City of Broad Shoulders.
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