Right-handed pitcher Casey Kelly, the top organizational prospect for the San Diego Padres, will make his major league debut tonight against the Braves. The callup came when Jason Marquis went down with a broken wrist. Kelly’s 2012 season has been marred by injury but he has pitched eight games on three minor league levels and has 39 strikeouts against just three walks.

Kelly was part of the trade that sent 1B Adrian Gonzalez to Boston, moving to San Diego along with 1B Anthony Rizzo. Rizzo has since been shipped to the Cubs for Andrew Cashner.

The Padres are red-hot, having won seven straight and showing signs of life on offense. They are too far back in the standing this year but are improving over the second half and now have new ownership in place. The Braves, meanwhile, are in the thick of the playoff race as they hold down the top wild card spot and have moved to within 4 1/2 games of first-place Washington in the NL east.

UPDATE: Kelly’s debut was a success. Six shutout innings against the Braves, allowing only three hits and two walks with four K’s. Kelly got the win in San Diego’s 3-0 victory.