Philip Rivers' career as a high school football coach is off to a good start after his team DESTROYED their opponent in the season opener ... and the ex-NFL star was STOKED.
Of course, the 39-year-old took over as football coach at St. Michael Catholic in Fairhope, AL in January after ending his 17-year NFL career as a star quarterback.
The Rivers-led Cardinals kicked off their season Thursday against McIntosh at Fairhope Municipal Stadium in Alabama ... and they won, 49-0!!!
Rivers was fired up to say the least .