Sanchez welcomes Tebow: “I’m not worried about losing my spot”

On the day that Tim Tebow was formally introduced as his backup before a huge media contingent, Jets quarterback Mark Sanchez said he isn’t concerned about Tebow pushing him out of the No. 1 spot on the depth chart. “I’m not worried about losing my spot,” Sanchez told Rod Boone of Newsday. “Mike Tannenbaum and…