OAKLAND, Calif. -- The Oakland Athletics acquired American League saves leader Jim Johnson from the Baltimore Orioles on Monday night as a replacement for All-Star closer Grant Balfour.
The A's got Johnson on Monday for infielder Jemile Weeks and a player to be named, capping a busy day for general manager Billy Beane.
The teams announced the trade late Monday.
Balfour became a free agent after the season and is expected to command a multiyear deal. While Beane expressed confidence he could fill the ninth-inning duties from within, he opted for a trade -- a common December practice for the GM and low-budget club.
The 30-year-old Johnson converted 50 of 59 save opportunities in 2013, going 3-8 with a 2.94 ERA. He was tied with Atlanta's Craig Kimbrel for the major leagues saves lead.
Johnson, who led the majors with 51 saves in 2012, earned $6.5 million in base salary this year. He also made a $25,000 bonus for finishing at least 55 games, leading the majors with 63.
Weeks, 26, batted .271 last season with a .376 on-base percentage and a. 369 slugging percentage with 17 stolen bases in 130 games for Triple-A Sacramento. The 12th overall selection in the 2008 First Year Player Draft out of the University of Miami, Weeks is a career .282 hitter in the minors with a .375 on-base percentage and .402 slugging percentage in 361 career minor league games in six seasons in the Oakland system. He has hit .258 with a .319 on-base percentage and .357 slugging percentage in 223 games in the big leagues since 2011. He batted .303 with a .340 on-base percentage and .421 slugging percentage, with 22 steals in 97 games as a rookie with the A's.
The Orioles also announced that they have tendered contracts to six of their arbitration eligible players: catcher Matt Wieters, first baseman Chris Davis, right-handed pitchers Tommy Hunter and Bud Norris and left-handed pitchers Brian Matusz and Troy Patton. In addition outfielders Steve Pearce and Nolan Reimold have agreed to terms on contracts for 2014. Right-handed pitcher Eddie Gamboa and outfielder Jason Pridie were not tendered contracts by the club.
Also Monday, free-agent left-hander Scott Kazmir agreed to terms on a $22 million, two-year contract with Oakland, a person with knowledge of the negotiations said. The deal is pending a physical. The person spoke on condition of anonymity because the team hadn't made a formal announcement. Kazmir pitched for the Sugar Land Skeeters in the Atlantic League in 2012.
The A's reached agreement on a one-year contract with right-hander Fernando Rodriguez. He was one of nine arbitration eligible players -- and all were tendered contracts for the 2014 season, including first baseman Daric Barton. Barton is the team's longest-tenured player and will provide infield depth.