and i thought, god, we collided. >> sweetwater oak stumbles. >> sweetwater oak loses the rider.urrent lady in front. >> the next thing you know, she's popped back up and i just happened to be hanging on her neck. >> riders, please watch out. >> nate hubbard manages to stay on the horse and grabs hold of her neck. it's the only thing keeping him from being trampled by the other horses coming from behind at 40 miles an hour. >> i looked back behind me and nate is hanging off this horse's neck. i was just like shocked. >> nate is hanging on for dear life as sweetwater oak continues to run the last stretch of the race. >> i'm looking at her in her eye, i'm just hanging on to her neck. i really had no idea how i got there. it was just a blessing that i was able to just have something to hold on to and she was able to hold me up. >> sweet water oak places second that day. according to the rules, as long as the rider doesn't touch the ground, the filly has carried her weight across the finish line. to nate hubbard, sweetwater oak did more than carry her weight. she saved his life. >> r