Diving right in on the set of 'Splash'

Watch Brandi Chastain during the latest episode of 'Splash,' airing Tuesday at 8 p.m. ET on ABC. AP Photo/Bill Wippert

If you ever wondered how a person goes from playground to reality show stardom (using that term loosely), it goes a little like this: I was playing basketball with a friend at about 4:30 one Monday afternoon when I got a call on my cell. "This is John Holmes from 'Splash,'" he said. "There's been an injury and we'd like to have you on the show. Can you get here tonight?"

I'd spent three weeks working with a coach and training to learn how to dive; but, as of the previous Wednesday, we pretty much determined it wasn't going to happen. I told John I couldn't exactly drop everything and come -- after all, I hadn't talked to my husband, let alone made any arrangements for my 6-year-old son. But next thing I knew, I was on a flight to Riverside, where "Splash" is filmed. I went through alterations, hair and makeup, and was the first diver on the show that night. Talk about a whirlwind.

As a kid, I jumped off the diving board, but not in a way where I had any idea of the technical nature of the sport. Being on the show has been trial by fire. I have no doubt my experience as a soccer player has helped me. I know I have the athletic ability to jump, for one; and when we had to do a team dive where I had to be there for a teammate, that's in my wheelhouse. But the body awareness in the air and composure you need to have as you hurl toward the water is like nothing I had ever experienced. I never knew you could get bruises landing on water, but I've managed it.

The first time I dived, I pretty much blacked out, and the next thing I knew I was in the water. It only takes about 1.5 seconds to fall from the 10-meter platform, so there isn't much thinking that goes on. You just go. Too much thinking gets in the way. Honestly, I hated it in the beginning. Every day driving to the pool, I asked myself why I was doing it -- I just felt so nervous and uncomfortable. But every day since the show started filming, the water seems to get closer and closer to the platform.

Everyone trains at different times, but the greatest part is how everyone encourages everyone else. You can see the fear in people's eyes, and sometimes I don't know what the heck I'm doing out there. But it's such a blast behind the scenes. We're a bunch of grown-ups acting like kids, and we have as much fun with the crew as we do the other contestants. Each of us has two camera people that are always on us, so we get to know them. They'll give us a high five when we do a good dive and that sort of thing. My camera people are Adam and Adela. The other day, I asked Adam if I had improved since he started filming me. "Oh my gosh, I was so afraid for you," he said.

I've also kind of gathered a following of grandmothers who work out before I get into the pool. Shirley and the crew cheer me on every morning. The other morning, Shirley said, "You look like you need a grandma hug." Oh boy did I -- I had been practicing this new, harder dive for the past two days (I'm not sure if I can tell you the specifics) and I splattered myself across the water five times. Ouch.

Now I'm running to the airport to make it back to watch my son play Beethoven's "Ode to Joy" on the piano for a school talent show. My main priority these days is to be the best mom I can be, so I begged to dive early today so I could make it.

I think Rory Bushfield is one of my toughest competitors. As a skier, he's fearless, and he's got the flips and twists down. But his challenge is learning to dive headfirst -- something you don't do in his genre. Drake Bell also looks pretty good. He says he wasn't athletic growing up, but he is graceful and has spent a lot of time practicing, which has paid off. I wouldn't count out Katherine Webb or Nicole Eggert, either. I've got respect for everyone out there, but I'm too competitive not to want to win!