played as Jairo García (2004-2005)
- Bats Right, Throws Right
- Height 6' 0", Weight 164-220 lb.
Now known by his real name of Santiago Casilla, and by his original birth date of 1980, he started his baseball career with false documents that gave him the name of Jairo Garcia Paulino and a birth date of March 7, 1983.
Garcia was signed by scouts Bernardino Rosario and Raymond Abreu for the Oakland A's in January 2000. He made his pro debut with the DSL Athletics East that summer and came stateside with the AZL Athletics in 2001.
Casilla was the winner in Game 4 of the 2012 World Series against the Detroit Tigers. He took over for Jeremy Affeldt with the score tied 3-3 and two outs in the bottom of the 9th, and promptly hit Omar Infante with a fastball, breaking his wrist. He stayed in the game to retire Gerald Laird, though, and the Giants scored once in the top of the 10th. Sergio Romo pitched the bottom of the 10th, but Casilla was credited with the 4-3 win that completed a four-game sweep and gave the San Francisco Giants a second World Championship in three years.
On May 17, 2015, Casilla pitched an immaculate inning for the Giants, striking out the side on nine pitches in the 9th inning to pick up a save in a 9-8 win over the Cincinnati Reds. Marlon Byrd, Brandon Phillips and Jay Bruce were his victims. He was the 80th pitcher to accomplish the feat.
His brother, Jose Casilla, has pitched in the minor leagues.
- 30 Saves Seasons: 2 (2015 & 2016)
- Won three World Series with the San Francisco Giants in 2010, 2012 and 2014