The acquisitions were reported by Baseball America late Wednesday, along with the club's agreement with right-hander Jim Hoey, though the Brewers announced Hoey's deal before Christmas. Hoey, who has pitched in 61 Major League games for the Orioles and Twins, was invited to the team's early Minor League minicamp, but none of the three players was granted invitations to the Brewers' Major League Spring Training camp.
The MLB.com transactions page says Tosoni's deal was official on Dec. 28. The 26-year-old, Canadian-born left-handed hitter won All-Star Futures Game MVP honors in 2009 and made a 60-game Major League debut with Minnesota in 2011, batting .203 with five home runs and 22 RBIs, including a three-run homer off Zack Greinke that helped turn a 6-1 deficit into a 6-1 Twins win over the Brewers that July.
Chavez, 29, is an 11-year Minor League veteran who played shortstop in the Brewers' system from 2001-08, topping out at Triple-A Nashville. He played in the Phillies and White Sox systems from 2009-11, but he began last season on the Braves' Double-A disabled list with a right groin strain and was eventually released and did not play affiliated ball in 2012. Chavez most recently appeared for the Toros del Este in the Dominican Winter League, batting .300 in 26 games.
A switch hitter, Chavez is a career .245 hitter in the U.S. Minor Leagues.
Hoey turned 30 on Monday and has a 7.02 ERA in his 59 Major League innings. In parts of nine Minor League seasons, he has a 3.38 ERA and 59 saves. He pitched for Toronto's Triple-A team in 2012.