Rabell Saúl Rivera (born December 7, 1977) is a Puerto Rican former professional baseball pitcher. He played in Major League Baseball (MLB) for the Washington Nationals and Arizona Diamondbacks. Career Minnesota Twins Rivera attended the University of Mobile, and was drafted in the ninth round of the 1998 Major League Baseball draft by the Minnesota Twins. He was assigned to the Elizabethton Twins after signing. He was promoted to the Quad Cities River Bandits in 1999, where he would spend the season. In 2000, he began the season with the advanced Single-A Fort Myers Miracle before receiving a promotion to the Double-A New Britain Rock Cats. He would spend the 2001 season with New Britain, pitching in 33 games for the club. He was added to the Twins roster in the offseason. New York Mets On November 20, 2001, Rivera was selected off waivers by the New York Mets. He began the 2002 season with the Double-A Binghamton Mets. Montreal Expos On July 16, 2002, the Mets sent Rivera to the Montreal Expos as the player to be named later for the April trade of Bruce Chen, Dicky Gonzalez, and Luis Figueroa to Montreal in exchange for Scott Strickland, Phil Seibel, and Matt Watson. He was assigned to the AA Harrisburg Senators upon his acquisition. He began the 2004 season with Harrisburg. Milwaukee Brewers On June 7, 2004, the Expos traded Rivera to the Milwaukee Brewers with Peter Bergeron for Jason Childers and Jason Belcher. He was assigned to the Double-A Huntsville Stars. Rivera elected free agency on October 15, 2004. Washington Nationals On November 16, 2004, he signed with the Washington Nationals. He played for Harrisburg in 2005, playing in 40 total games for the team. Rivera made his MLB debut on May 25, , for the Washington Nationals against the Houston Astros. In that game, he got his first hold, pitching 2/3 of an inning. He struck out one and walked one. He had been called up from Triple-A New Orleans on May 22, 2006. He finished his rookie season with a 3.43 ERA. He struck out 41 and walked 32. In , he only allowed one home run in 93 innings pitched. Rivera spent 2007 between the major league club and the Triple-A Columbus Clippers, pitching in 85 games for Washington. In 2008, played the entirety of the season with Washington, pitching in 76 games. In 2009,