Rivers knows Chargers changes get bigger if they don’t deliver

Philip Rivers doesn’t need to look at last year’s record, or two straight years without the playoffs, to know the end could be near for the Chargers as we know them. Rivers told Alex Marvez of FoxSports.com and Gil Brandt on Sirius XM NFL Radio that the retirements of former teammates LaDainian Tomlinson and Kris…