Both Black and Lutz are on the 40-man roster - the Mets purchased Tim Byrdak's contract from Triple-A Las Vegas and added him to the 40-man roster.
Lutz will essentially replace Ike Davis - who suffered a strained oblique during last night's game - although it's unlikely the Mets will place Davis on the disabled list now that the active roster can expand by 15 players.
[sny-accordion title="For statistics and information on Byrdak, Lutz and Black, click here..."]
Byrdak hasn't allowed an earned run in eight innings over 11 games since joining Triple-A Las Vegas. He has a 1.26 ERA in 21 1/3 minor league innings with Las Vegas, the GCL Mets, and Single-A St. Lucie this season. He underwent surgery to repair a torn capsule in his left shoulder last September.
In 111 games with the 51s this season, Lutz, 27, hit .293 with a .377 OBP and .856 OPS, 13 home runs and 80 RBI in 399 at-bats.
Black, 25, has appeared in three games for the Pirates this season and has allowed two runs and six hits in four innings.
Black was 5-3 with 17 saves and a 2.51 ERA in 53 games with Triple-A Indianapolis this season. He allowed 28 hits, issued 21 walks and struck out 63 while holding opponents to a .169 batting average against.
Black was the 16th best prospect in the Pirates minor league system, according to MLB.com.