Jason Kelce is showing off his strength at the Paris Olympics -- but not even his wife, Kylie, is rooting for him ... 'cause she says he doesn't play fair.
The retired Eagles center took on USA women's rugby star Nicole Heavirland for an arm wrestling match amid the 2024 Summer Games. The face-off took place right after Team USA won their match against Brazil ... and as you can see, Nicole was still wearing her uniform.
OLYMPIC STRENGTH
The 2 athletes put on quite the display .