"To shave or not to shave?

A new study by the Elias Sports Bureau finds a trio of Major Leaguers play better baseball when they're clean shaven, but that doesn't begin to explain the Stanley Cup finals success of the bearded Bruins.

"Well, I guess that would kind of contradict the theory a bit," said Jonathan Papelbon, the Sox closer who is also a pitchman for Philips Norelco, which commissioned the Elias study.

"When you look good, you feel good, you play good," explained Papelbon, who touts Philips Norelco's SensoTouch 3D in a new ad campaign.

Papelbon's first commercial for the company pits him against Yankees outfielder Nick Swisher with the players arguing about whether to use the product dry or in the shower. In the ad, Swisher says the Sox hurler will "always be perfectly groomed for a blown save."

"You can shave in the shower at home in October, because that's where you'll be this postseason," Papelbon shoots back."