Jason Bay has company on the Mets' disabled list, as right-hander Mike Pelfrey will be joining him on the 15-day disabled list. An MRI performed this morning showed swelling in his right elbow. However, the team said there is no course of treatment and that they may get a second opinion.

The team has yet to rule out ligament damage, according to CBSSports Insider Jon Heyman.

Pelfrey, 29, had a 2.29 ERA in three starts this season with no decisions.

To replace Pelfrey, the team called up left-handed reliever Robert Carson. Carson, 23, has a 3.18 ERA in five appearances this season, striking out six batters in 5 2/3 innings.

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