"One of the great mysteries of this decade is the loss of Markakis' power," Sheehan wrote. "After slugging .491 as a 24-year-old, he's seen that figure drop three straight seasons all the way to .318 in 2011. This year, he's not hitting for average, either: just .244, after five straight seasons above .290. Even with his above-average defense, that makes him a liability for an Orioles team that was, to some extent, built around his bat. Look for the average to rebound -- Markakis is hitting a ton of line drives -- without the power."