Antonio Francisco Bastardo Rafael (born September 21, 1985) is a Dominican former professional baseball relief pitcher.

He played in Major League Baseball (MLB) for the Philadelphia Phillies, Pittsburgh Pirates, and New York Mets.

Bastardo was signed by the Philadelphia Phillies in 2007 and assigned to the Lakewood BlueClaws of the "Low A" South Atlantic League.

For the Threshers in 2007, Bastardo appeared in one game, in which he gave up four earned runs but struck out twelve in five innings.

[1][2] Bastardo began the 2008 season in Clearwater, where he went 2–0 with a 1.17 earned run average and struck out 47 batters in his 30+2⁄3 innings of work.

On May 30, 2009, the Phillies announced that Bastardo would make his major league debut in a start at San Diego on Tuesday, June 2.

[9][10] After Brett Myers tore his labrum and placed on the 15-day disabled list, the Philadelphia Phillies called up Bastardo on June 2, 2009.

On June 25, during a start against the Tampa Bay Rays he suffered a shoulder injury[15] that forced him to go on the disabled list.

On April 24, Bastardo earned his first save in the major leagues when he relieved Roy Halladay after 8+2⁄3 innings, inducing one San Diego Padres batter to pop out and completing the game.

[26] On August 1, 2016, the Mets traded Bastardo back to the Pittsburgh Pirates in exchange for Jon Niese.