Vizquel, 40, gets at least one more season with Giants
Next season will be Vizquel's 20th in the majors and fourth as a Giant. The deal also includes a vesting option of 140 games in 2009 at $5.2 million. The 11-time Gold Glove shortstop has played in at least 136 games in 12 of his last 13 seasons.
Vizquel, who made $5.1 million last season, hit .246 last season, his lowest average since 2003.
His nine errors this past season were lowest among regular NL shortstops. His Gold Gloves are second among shortstops only to Ozzie Smith's 13.
"You always look for your team to have solid defense up the middle, and you can't get anybody much better than Omar," Giants right fielder Randy Winn said. "There weren't any young guys immediately ready to fill the shortstop position, so bringing back Omar was a priority. You need some veteran players around to help teach the young guys, too."
Still, Giants owner Peter Magowan opted to wait until after the season to negotiate with Vizquel.
"Bringing Omar back was one of our top priorities this offseason," general manager Brian Sabean said. "He is still one of the premier defensive shortstops in the game, and with the talent of our pitching staff, having his glove and leadership on the field is a necessity."
Vizquel has played 19 major league seasons with 2,570 career games at shortstop -- 13 behind countryman Luis Aparicio for most in the majors.
The Associated Press contributed to this report.