Chiefs quarterback Patrick Mahomes is well known for his golden arm. But against the Tennessee Titans on Sunday Night Football at GEHA Field at Arrowhead Stadium, Mahomes showed he can carry the Chiefs with his legs, too. Late in the fourth quarter and facing a third-and-17, Mahomes scampered for a 20-yard gain to keep the drive alive. Seven plays later, Mahomes used his skills as a runner to get the Chiefs in the end zone on a 14-yard dash, then converted the 2-point attempt on a 1-yard run. The Chiefs quarterback single-handedly tied the game at 17-17 to force the extra period, and then turn…