The Mets have placed righty starting pitcher John Maine on the 15-day disabled list with a bone spur in his right shoulder. This injury could likely sideline Maine for the rest of the season which would be a major blow to the Mets’ playoff chances. Maine has started 25 games for the Mets this season and he was 10-8 with a 4.18 ERA and a 1.35 WHIP. The Mets have activated 2B Luis Castillo from the D.L. to replace Maine on the active roster. Castillo has played in 68 games for the Mets this season and he is 64 for 245 (.261 avg, .696 OPS) with 42 runs scored, 3 homers, 26 RBIs and 13 stolen bases.