Signed by New York as a free agent on June 17, 2006, Patterson has played in parts of seven minor league seasons with Gateway of the Independent Frontier League (2002-05), Lancaster of the Independent Atlantic League (2005-06) and in the Yankees system (2006-08). In 232 career minor league games (52 starts) during that span, he is 34-14 with 38 saves, a 3.13 ERA (205 ER/589.0 IP), 615 strikeouts and 137 walks.
Michael Barrett, 31, has been on the disabled list since July 3 with facial fractures. He suffered the injury when he was hit with a foul ball while batting in the top of the third inning of the Padres game in Colorado on July 2. In 30 games with the Padres this season he hit .202 (19-for-94) with three doubles, two home runs, nine RBI, nine runs scored and nine walks. Barrett was been behind the plate in 30 games, including 29 starts. Over parts of 11 Major League seasons with the Montreal Expos (1998-2003), Chicago Cubs (2004-07) and Padres (2007-08), he has hit .264 (922-for-3494) with 220 doubles, 21 triples, 97 home runs, 422 RBI and 395 runs scored in 1,047 games.
Patterson will join the Padres tomorrow (September 12) when the team hosts the Giants at PETCO Park. San Diego's 40-man roster is now at 40.