By Chris Rosvoglou Philip Rivers went on to become the Chargers’ all-time leader in several passing categories. However, the team’s original plan was for Eli Manning to be their quarterback for years to come. The Chargers ultimately traded Manning to the Giants for Rivers and multiple draft picks. Rivers, who was inducted into the Senior Bowl Hall of Fame this year, provided some details on this trade between the Chargers and Giants. He revealed why San Diego’s front office was intrigued by his potential. Prior to the 2004 NFL Draft, Rivers boosted his stock with a strong performance in the Se…