Here's the official release from the Mets:
The New York Mets today announced the team acquired lefthanded pitcher Daniel Herrera and righthanded pitcher Adrian Rosario from the Milwaukee Brewers to complete the trade that sent righthanded pitcher Francisco Rodriguez and cash considerations to the Brewers on July 12..
Herrera, 26, appeared in two games with the Brewers this season after he was claimed off waivers from the Cincinnati Reds on May 23, 2011. He was 1-4 with a 2.20 ERA (15 earned runs/61.1 innings) three saves and 54 strikeouts in 46 combined games this season between Louisville (AAA) of the International League and Nashville (AAA) of the Pacific Coast League.
The 5-6, 165-pounder went 1-3 with a 3.91 ERA (10 earned runs/23.0 innings) in 36 games with the Reds in 2010. The Odessa, TX native appeared in 70 games as a rookie with the Reds in 2009, going 4-4 with a 3.06 ERA (21 earned runs/61.2 innings).
Herrera is 5-7 with a 3.94 ERA (41 earned runs/93.2 innings) in 115 major league games with the Reds and Brewers. He has allowed 110 hits, issued 34 walks and notched 66 strikeouts.
Rosario, 21, is 4-6 with a 4.32 ERA (48 earned runs/100.0 innings) with 81 strikeouts in 35 games, 14 starts combined between Brevard Country (A) of the Florida State League and Wisconsin (A) of the Midwest League this season.
The Santiago, Dominican Republic native was claimed by the Baltimore Orioles in the 2010 Rule 5 Draft but was returned to the Brewers on March 24. Rosario began the year with Brevard County, going 4-5 with a 5.83 ERA (43 earned runs/66.1 innings) in 16 games, 14 starts. He moved to the bullpen exclusively with Wisconsin. In 19 games with the Timber Rattlers, Rosario was 0-1 with five saves and 1.34 ERA (five earned runs/33.2 innings) with 42 strikeouts.
The righthander is 16-19 with a 4.64 ERA (146 earned runs/283.0 innings) in 94 minor league games, 29 starts with 122 walks and 236 strikeouts. He was originally signed by Milwaukee as a non-drafted free agent on August 21, 2006.