Rasmus sustained the injury while attempting to catch a fly ball during an extra-innings loss to Oakland on Friday. He was then cleared to play just a few hours before Toronto's series opener against the Rays, but even as first pitch neared the club wasn't 100 percent certain Rasmus would definitely be able to go.
"He's in the lineup, yet if he feels anything when he goes through pre-game here today, both shagging fly balls and taking BP, we may have a last-minute adjustment here," manager John Farrell said. "But, as of everything that he has reported coming into the training room, that won't be the case."
The news wasn't quite as positive for Brett Lawrie, who was forced to leave that same game on Friday because of tightness in his rib cage. The Blue Jays hoped to have Lawrie back in action on Tuesday night, but he was unable to go and remains day to day.
"Improved, yet he feels like he needs at least another day," Farrell said. "As much as he felt like he was getting past the discomfort that he was playing with, that one swing in Oakland in his first at-bat when he came out of the game that night, caused a bit more of a pinching sensation.
"While the last couple of days off have done him some good, he's still not ready to go today. We're still evaluating him day by day."