The New York Yankees are ending their pursuit of free agent pitcher Roy Oswalt after expressing concern about his chronic back issues. Oswalt has a history of back problems starting when he was with the Houston Astros. He reportedly has two degenerative discs in his lower back and was placed on the disabled list in June with back problems. The Yankees are very scared of his past back problems leading to one insider saying that's why the Houston Astros traded him. Oswalt was traded to the Philadelphia Phillies at the 2010 trade deadline for J.A. Happ and minor leaguers. He has a record of 16-11 during his time in Philadelphia. The Phillies declined Oswalt's option last week, most likely, because of his chronic back problems and did not want to be stuck with paying him $16 million. The Yankees are still trying to pursue another starting pitcher this winter and are likely to make a bid for Texas Rangers pitcher C.J. Wilson and Chicago White Sox pitcher Mark Buehrle.