TORONTO -- Even though Tim Wakefield is due to join the bullpen soon with the return of Daisuke Matsuzaka to the rotation on Saturday, he's been going through his usual routine this week.

"I think the best way to go about it is to let him go out and have a side [session] today, almost like a normal week," manager Terry Francona said.

Because he started on Sunday, the earliest Wakefield can pitch from the bullpen is Friday in Baltimore.

"With the day off [in the schedule] on Thursday, it kind of slots him in where it works," Francona said.

Francona said he hasn't talked to Wakefield yet about his role as a reliever.

"Out of fairness to him, we'll try to give him a little time to breathe for a couple of days," Francona said. "We'll try to do what's best. We'll see. I really don't know, to be honest with you. If guys are getting people out, we'll take it anywhere we can get it.

"Under normal circumstances, we like him to start an inning, just because of the way he pitches, but we actually give guys enough of a heads up that they know who they're getting ready to face."

Castro sent down to make room for Embree

TORONTO -- Fabio Castro's time with the Red Sox lasted less than 24 hours Tuesday, as the left-hander was sent back to Triple-A Pawtucket to make room for southpaw Alan Embree, who will join the club Wednesday.

With Clay Buchholz pitching a strong eight innings in the Red Sox's 2-1 victory over the Blue Jays, Castro was not needed and found out after the game that he was on his way back to Pawtucket.

"[Embree will] be here [Wednesday]," manager Terry Francona said after Tuesday's game. "We needed Castro here in case something happened. Now we can get a reliever. We have a day off the next day [Thursday]. I think we'll have some semblance of order after tonight and we should be OK."

Embree, who was a member of Boston's bullpen from 2002-04, is 0-0 with a 3.68 ERA in eight games at Triple-A.

Boston was forced to make a roster prior to Tuesday's game because its bullpen had logged 9 1/3 innings over the previous two games -- a 10-inning 7-6 loss to the Orioles on Sunday and a 13-12 win over the Blue Jays on Monday.

In order to make room on their roster for Castro, who was slated to start Tuesday for Pawtucket, the Red Sox optioned right-hander Scott Atchison to Triple-A.

Atchison (0-1, 6.10 ERA) was the loser in Sunday's game and also pitched 1 2/3 innings on Monday.

Tim Wakefield, who went 6 2/3 innings in a start on Sunday, will be moved to the bullpen to make way for Daisuke Matsuzaka in the rotation, but the knuckleballer will not be available until Friday, when the Red Sox open a three-game series in Baltimore.

Castro, 25, has made three starts for the PawSox this year, going 0-1 with an 8.10 ERA.

Castro is in his first season in the Red Sox's organization after signing as a free agent in December.

He split the 2009 campaign between Toronto's Double-A New Hampshire and Triple-A Las Vegas affiliates, combining to go 9-6 with a 4.01 ERA. The left-hander last appeared in the Majors with Philadelphia in 2007. He is 0-1 with a 3.30 ERA in 30 career games, including one start, for the Rangers in 2006 and Phillies in 2006-07.

Cameron, Ellsbury hit off tee

TORONTO -- Injured outfielders Mike Cameron and Jacoby Ellsbury each took swings off a tee prior to Tuesday's game against the Blue Jays at Rogers Centre.

"The way [Cameron has] progressed, he'll probably do some light running by the end of the week," manager Terry Francona said. "So that's good.

"I think the thing with Jacoby is that we're just trying to increase the intensity every day. That's pretty much where he's been, and hopefully where he'll stay."

Both outfielders are on the disabled list. Cameron has a lower abdominal strain and Ellsbury has four fractured ribs.

Sox tied franchise record in slugfest

TORONTO -- The Red Sox were able to defeat the Blue Jays in a 13-12 slugfest on Monday without a home run while Toronto went deep twice.

According to the Elias Sports Bureau, the Red Sox tied their franchise record for most runs scored in a one-run victory in which they did not hit a home run.

Boston also had 13-12 victories in 1934 against the St. Louis Browns and in 1950 against the Detroit Tigers.

With 18 hits and no home runs, it was the first time Boston had as many as 18 hits without a homer since it defeated Toronto, 11-9, on July 27, 1999.