Patrick Mahomes is well aware his performance did not meet expectations in the Super Bowl ... addressing Chiefs Kingdom and vowing to work hard to get back to the Big Game after losing to the Eagles.
The 29-year-old took to his X account Sunday night following the Eagles' 40-22 dismantling of the Chiefs ... with Mahomes taking time to thank fans for their support all season long.
"I let y’all down today," the three-time Super Bowl MVP said.