Results of an MRI exam on Blue Jays shortstop Jose Reyes' tight left hamstring revealed a mild strain on Monday afternoon, leading the club to consider him day to day.

Reyes was removed from Saturday's game after the third inning because of soreness in his left leg. He hit a ground ball to second base and felt some discomfort while running to first base in the second.

Reyes was initially listed as day to day, but when the tightness did not subside, the club scheduled him for the MRI to find out exactly what was wrong.

"Right now we're taking it day by day," Reyes, who has dealt with left hamstring issues in the past, said before the results were known. "I'm going to get an MRI this afternoon to have a better idea.

"I'm not concerned. I just want to make sure everything is all right. I have to find out what it is. We'll see."

Reyes doesn't have a lot of time to get his leg back to full strength before the start of the season. Toronto is set to begin the year on March 31 in St. Petersburg and will play its first 10 games on artificial turf, with four coming at Tropicana Field followed by a homestand at Rogers Centre.

The 30-year-old Reyes has dealt with this type of injury before. He had two stints on the disabled list and missed a total of 29 games during the 2011 season for a similar injury. Reyes has actually missed a handful of games over the years because of hamstring issues, but his only other time on the disabled list with that injury came in 2004.

Toronto's hope was that the tightness would go away relatively quickly, but so far, that hasn't happened. There's a week for that to change, and until Reyes feels better, he's not going to push the issue.