He will receive $3 million plus incentives.
"He obviously has a lot of October experience, experience pitching late in games and pennant races," said Andrew Friedman, president of baseball operations. "As we look at our bullpen and the configuration, someone who is elite, right vs. right, was attractive to us, and from our standpoint he's one of the best right-on-right guys out there."
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Right-handed hitters had a .234/.272/.403 slashline against Romo last year, with 24 strikeouts and only four walks. Romo, who turns 34 next month, would seem to have the inside track to replace setup man Joe Blanton, who also is a free agent. The slider specialist gives a different look and has more late-inning experience than hard-throwers Pedro Baez, Josh Fields, Josh Ravin and Chris Hatcher, the right-handers that figured to vie for the job had there not been a late acquisition.
Dave Roberts, who deftly pushed the buttons in his Manager of the Year rookie season of 2016, said Romo won't necessarily always pitch the eighth inning.
"In talking to Sergio, last year we had one of best bullpens in baseball and that lends itself to unselfishness," said Roberts. "Sergio definitely is up for that. A lot of times the eighth inning, but he's up for anything."
Romo is one of three additions of the offseason, following the trade for second baseman Logan Forsythe from Tampa Bay and the signing of free-agent outfielder Franklin Gutierrez. The Dodgers have not yet made official the signings of Gutierrez and Chase Utley, which will require corresponding roster moves.
Garcia, who made 59 appearances for the Dodgers in 2015, pitched in only nine games last year and had Tommy John surgery in October.
Ken Gurnick has covered the Dodgers since 1989, and for MLB.com since 2001. This story was not subject to the approval of Major League Baseball or its clubs.