Roster update: Corey traded, Colon strong, Lowrie, Tavarez, Alvarez

Boston traded reliever Bryan Corey to the San Diego Padres yesterday for either cash or a PTBNL. I think it’s a good move for Corey, who stands to get more playing time for the Pads; I think it also shows the front office’s growing confidence in young arms like Craig Hansen and Justin Masterson, who could stick in the Sox bullpen if injuries strike.

Bartolo Colon continues to progress, and went three innings in his minor league start yesterday. He allowed one run on four hits, but didn’t walk anyone over 49 pitches. He was able to touch 94 mph (some sources say 97 mph) on the gun, so when he’s ready he could be a big boost for the Sox pitching staff. He is scheduled to up it to 75 pitches in his next outing. You have to wonder what the Sox will do about the rotation if he’s called up on June 1; it may mean sending Clay Buchholz to Pawtucket. The Sox have to limit his innings somehow this year, and that might be the way they choose to do it.

With the arrival of Alex Cora, youngster Jed Lowrie was optioned to Pawtucket; the plan is for him to be their everyday shortstop, but he will continue to play around the infield every 7th day, to keep him fresh at 2nd and 3rd as well. It was nice for him to hit his first dinger on Saturday before being demoted.

The Rockies are still showing some level of interest in Julian Tavarez, but there is nothing imminent. I wouldn’t expect them to give up much for a 5th starter they don’t plan on keeping the whole year, anyway.

The Sox also released left-handed pitcher Abe Alvarez yesterday. The 25-year old was a 2nd round pick in 2003, but never quite made the grade for Boston. A soft tosser, Alvarez is a control pitcher who is seen as a swingman or spot starter. He’s given Pawtucket a lot of solid years. Best of luck to him.