Vargas posted a 7.32 ERA with 8.4 K/9 and 4.6 BB/9 in 17 relief appearances for the Brewers last year before they released him. The Dodgers picked Vargas up in June, only to release him two months later. The 32-year-old has played for five teams in his eight-year MLB career, all of them in the National League.
The Rockies, who added Sean White yesterday, have room for competition in their 'pen. Matt Lindstrom, Matt Belisle, Rafael Betancourt and Huston Street are likely guaranteed spots, but there's still room on the roster for three other relievers.