Which college was Eli Manning playing for when he entered the NFL?

Which college was Philip Rivers playing for when he entered the NFL? What jersey number did Philip Rivers wear with the Chargers? What position did Eli Manning primarily play? Eli Manning is best known for playing with which NFL team? What jersey number did Eli Manning wear with the Giants? What position did Matt Ryan primarily play? Matt Ryan is best known for playing with which NFL team? Which college was Matt Ryan playing for when he entered the NFL?