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05/29/10 5:29 PM ET

Polanco to undergo MRI on Sunday

Ailing third baseman misses second consecutive game

MIAMI -- Phillies third baseman Placido Polanco is still feeling the effects of a swollen left elbow that he initially hurt after getting plunked more than a month ago and aggravated while playing against the Mets recently.

Polanco was out of the lineup for the second consecutive game on Saturday, when his team played the second of a three-game series against the Marlins at Sun Life Stadium. Polanco, who was staying away from hitting again, too, will undergo an MRI on Sunday, and it is at that point that the 34-year-old will know whether his status is day-to-day or more serious.

"It's been bothering me ever since I got hit," said Polanco, who feels the injury was made worse by coming back too soon. "It comes and goes. I've been able to play, but sometimes I swing and miss and it seems like I hyperextend my elbow, and then it feels weak and I can't extend it, field or hit.

"It hurts there a little bit, too, just from the touch."

Starting in Polanco's place at the hot corner was Juan Castro and hitting in his usual No. 2 spot was shortstop Wilson Valdez.

Polanco got hit on April 21 by a first-inning fastball thrown by Tim Hudson. He came out of the game in the seventh, then missed the next day's game and just one more start before Friday. But while playing against the Mets at Citi Field on Thursday, Polanco said he further aggravated the elbow injury while leaping for a ball.

Polanco did say he was feeling better on Saturday. He stayed away from any activities on Friday -- he was scheduled to play catch before Saturday's game -- but there is still some inflammation right above the right-handed hitter's left elbow.

Polanco, who had been icing the injury and taking anti-inflammatories, estimated there may be some scar tissue left over. He added that, when tests were initially run, they found something loose, but Polanco believes it may have stemmed from a preexisting injury.

"The MRI is going to be the answer to everything," Polanco said. "See how bad it is and what it is and if it can get worse, or if it's just inflammation."

Alden Gonzalez is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.