Jeremy Lin -- Foot Race With Homeless Guy ... Wins

Here's video of 26-year-old professional athlete Jeremy Lin in a foot race with a 55-year-old homeless guy in L.A.

So the question ... who ya got?

It all went down over the NBA All-Star break -- Lin and some of his pals decided they would help out in the community by socializing with some of the less fortunate and serving up food.

That's when one of the men decided he wanted to serve Jeremy -- and challenged the pro basketball player (who's 29 years his junior) to a foot race in the park.

Check out the video -- the man claimed he was "pretty quick for 55" and we gotta say, he moved pretty well against Lin.