Which college was Walter Payton playing for when he entered the NFL?

What jersey number did Jayden Daniels wear with the Commanders? What position did Jim Brown primarily play? Which college was Jim Brown playing for when he entered the NFL? What jersey number did Jim Brown wear with the Browns? What jersey number did Walter Payton wear with the Bears? What position did Barry Sanders primarily play? Which college was Barry Sanders playing for when he entered the NFL? What jersey number did Barry Sanders wear with the Lions?