Jack Wilson will be sidelined four to six weeks with a right calf strain he suffered while working out with Pastornicky in California on Tuesday. The veteran infielder was being supported by crutches when he reported to Spring Training on Friday.
"It's one of those things that you need to make sure it's gone before you come back," Braves manager Fredi Gonzalez said. "If you try to come back too early, it can nag you for a long time."
Wilson's injury opens the door for Josh Wilson or Drew Sutton, a pair of non-roster infielders, to gain a spot on the Opening Day roster. Both have Major League experience and the versatility to play each of the infield positions.
"We've got plenty of candidates here in camp to do that job," Gonzalez said.
Wilson suffered the injury while running sprints at his California home. He was working out with Pastornicky, who had traveled to his home to work out for five days before the start of Spring Training.
"It's good that it's at this point in time, and not a point where I would miss too many games in the season," Wilson said.
Wilson spent the final month of the 2011 season with the Braves and re-signed with the club in January with the understanding that he would serve as a mentor for Pastornicky, who is slated to make his Major League debut as the starting shortstop against the Mets on Opening Day.