BOSTON (CBS) – Jake Peavy was scratched from his Tuesday night start for the Chicago White Sox, making it more than likely the veteran right-hander will be dealt before Wednesday afternoon’s trade deadline.

While it was believed the Boston Red Sox were the favorites to land Peavy, that has changed a bit as of Tuesday afternoon. According to a Tweet by ESPNBoston’s Gordon Edes, the Arizona Diamondbacks are now the front-runners to land the starting pitcher.

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Diamondbacks general manager Kevin Towers  has a long relationship with Peavy, as he was the man who drafted the pitcher back in 1999 while with the San Diego Padres.

Peavy is 8-4 with a 4.28 ERA in 13 starts this season. He has won each of his last two starts after returning from a rib injury that landed him on the disabled list.

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Arizona is currently 2.5 games behind the Los Angeles Dodgers in the NL West. Boston trails the Tampa Bay Rays by .5 games in the AL East.

Peavy, the 2007 NL Cy Young winner with the San Deigo Padres, is signed through next season, due to make $14.5 million.