I agree someone needs to figure out how to do a sport-sex series.
The key though is not to let it focus too much on the guys -- you need to give the girls a role and make their personalities and skills a big part of it.
I'll also add another "round" to that list:
Round 0) 5 minute handjobs to a room full of guys wanting to audition. The idea would be to do a "Shane's World" or "College Fuckfest" style public event with lots of hot porn girls there, and they invite guys to step up and get a handjob and cum on their tits, with the offer that any guys that ****** would get an invitation to a private Round 1 scene. Round 0 would be more of a mass-produced montage of pro-am handjobs & cumshots, where the guys would be required to have themselves hard and ready to go when it's their turn. The girl would have a ruler and would immediately turn away anything shorter than 6 inches. Then she'd spend a minimum of 2 minutes and a max of 5 minutes stroking him, during which time he'd be asked his first name and then told to shut up except for warning the girl when he was going to cum, as any cumming without warning would result in disqualification and the girl would not finish him off. After giving his warning he'd have 30 seconds to jerk himself off and land three shots on her tits from a distance of two feet. The girl could disqualify him for any reason, including if she felt he'd intentionally aimed for her face.