Ryan Phillippe football Deacon Ava Ryan Phillippe football Deacon Ava

Ryan Phillippe is one devoted daddy! Reese Witherspoon's ex, looking sexy in a basic white undershirt and showing off his arm tats, stood on the sidelines during son Deacon's football game in Beverly Hills.

After the game, daughter Ava and Deacon cruised to the car ... with the family dog in tow. We can't believe how much Ava looks like mom!

See more photos of Ryan and the kids ... after the jump.