A's built for October, Sox for 2015 

July, 31, 2014
Jul 31
12:57
PM ET
Yoenis Cespedes AP Photo/Ben MargotWhile Yoenis Cespedes isn't even among the top three A's in offensive WAR this season, his power isn't in question.
Strange as it seems, the 2014 A's don't lack offense, so they could afford to part with a player as productive as Yoenis Cespedes in a deal that makes the team better overall.

Even if Jason Hammel hadn't had one of the worst four-start stretches of his career, Jon Lester still would be a significant upgrade over him. And the A's needed more help in their rotation, which has been around the league median so far this year, than they needed Cespedes in their lineup, which has been among the AL's most productive thanks in large part to smart, cost-effective platoon pairings. Oakland's rotation to date has relied on Jesse Chavez, a career reliever who's already 30 innings over his professional single-season high, and Tom Milone, who's struggled away from home because he's an extreme fly ball guy with a below-average fastball. (Milone is now a Twin, traded for Sam Fuld in a swap of last-roster-spot guys.) Adding Lester and Jeff Samardzija to the rotation this month gives the A's high-impact starters for the playoffs and significant bulk innings to ward off September fatigue from pitchers such as Chavez or Drew Pomeranz, who haven't handled these workloads before. It makes the A's a win or two better the rest of the way, and it also sets them up far better for October.

They also added Jonny Gomes -- whose one major baseball skill is smacking around left-handed pitching -- to an outfield platoon mix that also considers who's on the mound for Oakland (since Fuld is a better defender than Gomes).