He played in Major League Baseball (MLB) for the Toronto Blue Jays, Chicago White Sox, Texas Rangers, and Kansas City Royals.In 2003, he hit .352 with 11 home runs and 82 RBI en route to winning the Double-A Eastern League Most Valuable Player award.[3] After his participation with the Puerto Rican team in the World Baseball Classic, Ríos began to show why the Blue Jays valued him so highly in his break-out 2006 season.[6] In recognition of his outstanding third season in the majors, the young outfielder was rewarded with a spot as a reserve on the American League All-Star Team.[7] Ríos' performance earned him a spot as a reserve on the American League All-Star team[8] and he also agreed to participate in the 2007 State Farm Home Run Derby.He led the team in all offensive categories during the first half of the season but slumped after the All-Star Break, with his hitting average settling to slightly below .300, and was overtaken by teammate Frank Thomas as HR and RBI leader .Later that day, Ríos was videotaped cursing a heckling fan after he walked past a child seeking an autograph while leaving a fundraising gala for the Jays Care Foundation.[3] After a disappointing 2011 season in which he batted a career-low .227, Ríos rebounded to have one of his finest years in 2012, setting career highs with a .304 average, 25 home runs and 91 RBIs.Although Rios slumped for most of the tournament, he hit a clutch two-run home run against Japan in the semifinals and handed Puerto Rico its first WBC Finals appearance.