Milwaukee announced the move to bolster its bullpen before Sunday's series finale against the San Francisco Giants. The 30-year-old Broxton is 4-2 with a 1.86 ERA and seven saves in 51 appearances this season, and he will be called upon to help set up for closer Francisco Rodriguez.
''I like the pieces we have in our bullpen but we're talking about a guy that's a pretty special guy,'' manager Ron Roenicke said. ''He's got great stuff, he competes well, he's a good teammate and I think it puts another piece there where I can pitch guys exactly how I want to.''
Broxton is scheduled to join the team Monday in Chicago and is eligible for the postseason roster because the move was made prior to Sept. 1. His addition from a division rival will be a big boost to a beat-up, taxed bullpen - and an acquisition Milwaukee had been looking to make.
The Brewers add Broxton's $9 million salary for 2015 and a $9 million mutual option for '16.
''Part of the thinking was his contract. We had to recognize we're taking on this contract for next year, too,'' general manager Doug Melvin said. ''You try to get somebody who can help. There's a lot of big money guys today, whether they're relievers or (position) players, whatever. We've done a pretty good job with bullpens without having to spend a lot of money.''