Sadler/Waltrip Cup deal in jeopardy

Elliott Sadler's plans to substitute for Mark Martin behind the wheel of the No. 55 Michael Waltrip Racing Toyota in the NASCAR Sprint Cup Series may have been a bit premature. Sadler, who won the Nationwide Series race Saturday for Richard Childress Racing, was hoping to pilot the Aaron's Toyota for five races that Martin has elected to skip, starting with the race at Bristol Motor Speedway on March 18. But multiple sources told FOXSports.com the deal blew up Saturday night, shortly after it was announced via a press release. While talks had been in the works for a couple of months, the manufacturer conflict for Sadler, who drives Chevrolets full time for RCR in the Nationwide Series, appears to have squashed the arrangement. With most rosters set for 2012, don't be surprised to see former Toyota driver Brian Vickers run the five races in place of Martin.