Figueroa, 34, made six starts for the Mets in 2008 and emerged with a 3-3 record and a 4.57 ERA. His place in the organization is likely to be what it was last season -- insurance for the big league staff.
Also signed were left-handed pitcher Adam Bostick, infielder Andy Green and catcher Rene Rivera.
Bostick, 25, was limited to 11 appearances with the Mets' Triple-A New Orleans affiliate because he underwent surgery on his left knee May 27. He produced a 2-2 record with a 6.04 ERA, allowing 48 hits and 20 walks and striking out 30 in 44 2/3 innings.
Green, 31, split the International League season between the Zephyrs and the Reds' Louisville team. He was released by the Reds on July 1. Primarily a second baseman, he batted .233 with 15 doubles, two triples, five home runs and 19 RBIs for Louisville and .331 with 10 doubles, two triples, eight home runs and 28 RBIs in 52 games with the Zephyrs.
Green had played with the D-backs in 2004, '05 and '06, appearing in 136 games and batting .199 in 226 at-bats, and with the Hokkaido Nippon Ham Fighters of the Pacific Division of the Japanese Professional Baseball League on 2007.
Rivera, 25, had been in the Mariners' organization since 2001. He played last season with the Double-A Jacksonville team in the Southern League and with Triple-A Las Vegas in the Pacific Coast League. He batted .231 in 38 games with Jacksonville and .271 in 38 contests for Las Vegas.
Rivera appeared in 53 games with the Mariners from 2004-06, batting .227 with seven doubles, three home runs and 10 RBIs in 150 at-bats.
Marty Noble is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.