Muñoz made his major league debut in 2004 for the Chicago White Sox in a start against the Montreal Expos. It was a disaster, as Muñoz allowed eleven runs in three innings (including nine in the second inning alone) tying for third all-time for most runs allowed in a major league debut. (Bill James\' "Game Score" statistic, which measures pitcher starts — 50 is average, 90 is exceptional, below 20 is poor — scores Munoz\' start at minus-7, the worst for a debut start since at least 1918.) Amazingly, Muñoz almost did not emerge as the losing pitcher, as the Sox mounted an incredible comeback, finally falling 17-14. Muñoz went back to the minors, then returned in September, pitching fairly well in relief.\n', '

Muñoz\'s contract was purchased by the Washington Nationals in September 2007. Muñoz became the Nationals\' left-handed specialist after the team traded Ray King to the Milwaukee Brewers.\n', '

Before the start of the season, it was not certain whom the Nationals would use as their left-handed specialist. Although neither was on the 40-man roster, both Muñoz and Ray King were invited to spring training. However, Muñoz was assigned to the Double-A Harrisburg Senators of the Eastern League at the end of the preseason. He became a free agent at the end of the season; he did not play in 2009.\n', '

Return to Arnie Munoz Autograph Profile