Mariano Rivera picked up the 627th save of career as the Yankees beat the Sox 4-1 in game one of the weekend series. Sox hitters couldn't get to CC Sabathia so it figured they wouldn't get much off Mo.

The big question these days is - what's up with Jon Lester. After going 6-0, he is 0-2 with a 6.05 ERA in his last three outing. Ouch.

The Sox finish the month of May with a 15-15 record. Thank heavens for April.

Feliz Doubront vs Phil Hughes in game two.

Sunday night is Clay Buchholz vs Hiroki Koroda. This game can be heard live on Sportsradio 92.9TheTicket. Our coverage starts at 7PM.