TORONTO -- Lefty Evan Crawford, who left Friday's game in the eighth with two on and one out, is likely unavailable for Saturday's tilt against the Mets and is considered day to day after experiencing a lower back spasm.

Crawford was going to throw before the game and would likely pitch off a mound to test his back, according to Blue Jays manager John Farrell.

Farrell said Crawford came in Saturday more loose than expected and more than anything, the team wanted to get a gauge on his flexibility and movement.

"He felt something on one pitch and then bent over to stretch, which are abnormal movements, so we went out and checked him," Farrell said. "He wanted to get through it, but when he went to back up third base, you could tell when he was running that it was starting to clamp down on him.

"Last night has no bearing on his roster status -- he's day to day, and we will proceed accordingly."

Crawford has had this problem before, so the Blue Jays will take a cautious approach with him, although the injury doesn't appear to be serious.

The rookie has a 6.75 ERA over seven appearances with Toronto. He has also spent time in the Minors, at both Double-A New Hampshire and Triple-A Las Vegas, where he posted a combined 3.52 ERA over 7 2/3 innings of relief.

Rasmus on Blue Jays' bench in favor of Davis

TORONTO -- Colby Rasmus is out for Saturday's match against the Mets, marking the second consecutive game that he did not start, although he did enter Friday's blowout as a defensive replacement in the seventh and walked in his only plate appearance.

Blue Jays manager John Farrell spoke with Rasmus at length following Friday's game to talk to him about the situation. His job is not in jeopardy, but Farrell also wants to get Rajai Davis more at-bats and move him beyond a platoon situation with Eric Thames in left.

"It's about giving him another day to do some extra work with [hitting coach] Dwayne Murphy in the cage," Farrell said. "Give him a little bit of a breather. ... Rajai continues to swing the bat and play extremely well."

The fact that Davis can play all three outfield positions should guarantee him more playing time as long as he continues to swing a hot bat. Davis is hitting .421 in May with a 1.263 OPS after posting a .185 average in April and is coming off the first multihomer game of his career Friday.

Rasmus, meanwhile, continues to struggle in a Blue Jays uniform. The center fielder has a batting line of .203/.277/.338/.615 over 133 at-bats, with three home runs and 14 RBIs. He hasn't homered since hitting a pair against the Royals on April 21.

"Colby needs some extra work, a chance to take a little bit of a step back for the time being, a very short stint, give him a chance to regroup," Farrell said. "I think it speaks to the depth of our bench and the overall roster."

The 25-year-old was seen as a key piece to the organization after being acquired from the Cardinals in a three-team trade last July. In 35 games with the Blue Jays last season, Rasmus hit .173 with a .201 on-base percentage and .517 OPS.

Farrell said Rasmus' leg kick, something he has been working on since last season, has been more consistent and under control and that his difficulties at the plate are not mechanical, but rather a matter of his timing.

Vlad debuts at extended spring camp

TORONTO -- Vladimir Guerrero, who the Blue Jays inked to a Minor League deal May 10, appeared in his first games Friday at extended spring camp in Dunedin, Fla.

The nine-time All-Star and former American League MVP went 0-for-4 over two seven-inning games.

"[He] felt fine, he is just getting into game shape and getting his timing down," Blue Jays manager John Farrell said. "Certainly not going to make too much [out of it], as he just starts to get into games."

Guerrero played a few innings in the outfield and also saw time at designated hitter. The Blue Jays wanted to get him in the field to help speed up the process of getting his body into baseball shape, but he will, in all likelihood, be used exclusively as a DH if and when he comes to Toronto.

The initial reports have all been positive, and Farrell spoke earlier in the week about how Guerrero has accelerated his promotion to the big leagues if all goes right, after general manager Alex Anthopoulos said following the signing that he figured Guerrero wouldn't be ready for the Majors until June at the earliest.

Guerrero, a 16-year veteran, hit .290 with 13 homers and 63 RBIs while posting a career low .733 OPS in 145 games with the Orioles last season.