Early performances that mean something

Updated: May 10, 2013, 7:42 AM ET
By Buster Olney

Justin Upton is not going to hit 135 homers, Matt Harvey is not going to win every game, and Clayton Kershaw is going to allow a run (probably). But there are small sample sizes from the first nine days of the 2013 season that are worth believing in.

1. The Seattle bullpen is overpowering.

Closer Tom Wilhelmsen might have the best power curveball in baseball, and Carter Capps' fastball is the definition of late movement. Charlie Furbush, Oliver Perez and Stephen Pryor have not allowed a hit and so far, opposing hitters have a .565 OPS against the Mariners' bullpen.

If the Mariners hit, they will remain relevant all summer.