The Mets continue to describe Johan Santana's injury as a pectoral strain and that it's not severe. The issue forced Santana to leave Thursday's start after throwing 65 pitches in five innings. A person close to Santana confirmed Friday that the left-hander initially complained about his shoulder before leaving the game. More confusion surrounded the injury when New York manager Jerry Manuel pointed to his upper arm while describing the problem, and pitching coach Dan Warthen labeled it a "shoulder" issue.