Former Jets quarterback Mark Sanchez was stabbed during a brawl outside an Indianapolis bar Saturday morning, authorities said. Sanchez, 38, an analyst for Fox Sports who was in the city to broadcast the Colts’ game against the Raiders Sunday, was in stable condition after being rushed to a local hospital, the network said in a statement. The violence erupted after Sanchez and another man got into a squabble after midnight outside Loughmiller’s in downtown Indianapolis, cops said.  Police