Zoo Names Lucky Money After San Francisco Giants' Sergio Romo

A rep for the SF Zoo tells TMZ, the red-haired Francois' langur monkey will forever be named after Giants' closing pitcher Sergio Romo ... who struck out Detroit Tigers' Miguel Cabrera to clinch the WS Sunday night.

Sergio (the monkey) rose to fame during the NLCS -- when the Giants went on a 3-game winning streak right after its birth.

Fans claimed Sergio's miraculous birth was responsible for the Giants' wins -- and demanded the zoo name the "Lucky Langur" after a current Giants player.

The zoo's rep says they settled on the name because the monkey shares Sergio's "playful spirit."