NEW YORK -- The Milwaukee Brewers got a quick start on the second half, picking up a big-time closer.
The trade was announced only a half-hour after the All-Star Game, with the Mets sending K-Rod and cash to Milwaukee for two players to be named.
Rodriguez tweeted Wednesday that he was looking forward to a new opportunity and asked fans to support him.
He also wrote: "I want to thank all the Mets fans for your support during these two and half years in which I wore this jersey."
Most likely, more trades all over the majors will follow before the July 31 deadline for making deals without waivers. And this swap was yet another sign the Brewers are going all in this season.
Milwaukee is tied with St. Louis for the NL Central lead, and John Axford has done well as its closer. The Brewers, however, have had trouble finding steady setup men.
"Francisco has been one of the best relievers in the game for many years," Brewers general manager Doug Melvin said in a statement. "He is a high-quality arm who will be a tremendous asset to our bullpen as we prepare for the final months of the regular season and playoffs."
The Brewers traded for top starters Zack Greinke and Shaun Marcum in the offseason. They've made the playoffs just once since winning the American League pennant in 1982, and are faced with the prospect of watching star slugger Prince Fielder leave via free agency after the season.
Fielder was the MVP of the All-Star Game, hitting a three-run homer in the National League's 5-1 victory.
"That is a really big trade. He can really help us, he is a great player. It definitely gives us a spark. We are in first place now and getting him gives us a little more help," Fielder said.
"He is going to bring the success he has had in his career, his confidence. He is going to keep doing what he is doing. You can't go wrong when you get that kind of talent. You can never have too many guys. No discredit to Axford at all, but to get him, too, is great," he said.
The 29-year-old Rodriguez is 2-2 with a 3.16 ERA and 23 saves, a year after a fracas with a family member at Citi Field led to his arrest, an injury and the early end of his season. He is a four-time All-Star and set the single-season saves record with 62 in 2008 with the Angels.
Rodriguez was in the final season of a deal that guaranteed three years, $37 million. He has a vesting option for $17.5 million that is due to kick in at 55 games finished for 2012. Rodriguez currently is at 34 games finished.
That contract vesting would have crippled the payroll-strapped Mets' attempt to re-sign Jose Reyes next offseason.
The news comes days after K-Rod had switched agents from Paul Kinzer to Scott Boras.
"As a player, you appreciate it because you are going out there every day. When management does a move like ... they are trying their best to help as much as they can," Fielder said.
"If we got a shot we know (Melvin) is going to do something to get that extra push. If we play hard and we have a shot, he is going to do everything he can," he said. "It is a great night."
New York is 46-45 in the NL East and 11 games behind Philadelphia and 7½ behind Atlanta in the wild-card race. This was the first major trade for general manager Sandy Alderson since taking over the Mets in the offseason and there could be more after the break, with high-priced All-Stars Carlos Beltran and Jose Reyes heading toward free agency following the season.
"We thank Frankie for his contributions to the Mets and wish him well with the Brewers," Alderson said. "This trade allows us to develop and more fully utilize other members of our 2011 bullpen and offers some payroll relief as well."
Rodriguez is in his 10th major league season. He is 32-27 with 291 saves and a 2.54 ERA with the Angels and Mets, who signed him as a free agent after his record-setting year.
Information from ESPNNewYork.com's Adam Rubin and The Associated Press was used in this report.