TKO: Total Knock Out

Each episode features five contestants running an obstacle course. One contestant will run through a course featuring four zones, while the remaining contestants man "battle stations," firing projectiles to try to slow the racer down or knock them off the course:

• Zone 1 ("The Ball Blaster"): Contestants must navigate narrow ledges attached to plexiglass panels they can hold, while the battle station fires soft balls from a cannon
• Zone 2 ("The Frisboom"): Contestants must cross a narrow beam and a flexible bridge while the battle station fires large frisbee-like disks
• Zone 3 ("The Spike Launcher"): Contestants must traverse a series of moving pedestals while the battle station fires spiked cubes
• Zone 4 ("The Slammer"): Contestants must cross two spinning cylinders while the battle station releases giant sledge hammers

In Zones 3 and 4, the projectiles are pre-aimed, and can only be released once each, while the first two zones allow the contestants to aim and fire as long as they have sufficient projectiles.

Contestants who are knocked off, or fall off, an obstacle once must attempt the obstacle again. A second fall constitutes a TKO; contestants can proceed to the next obstacle, but receive a one-minute penalty. Contestants who are judged to be intentionally trying to fail an obstacle may be given a five-minute penalty. In Zone 4, the second cylinder has a "time capsule" attached; grabbing the cylinder subtracts 90 seconds from the contestant's time.

For each episode, the contestant with the fastest run time, after TKO penalties and time capsule deductions, if any, are included, wins a cash prize of $50,000, with the contestants finishing in second, third, and fourth places receiving much smaller prizes. Second place gets $5,000, third place receives $2,500, fourth place earns $1,000 while fifth place go away empty handed. The five episode winners with the fastest times will compete in a "Battle Royale" for a chance to win $100,000 the runner-up will get $10,000, third place will get $5,000, fourth place get $2,000 with last place receiving no cash prize.[2][3][4]

• Wipeout
• American Gladiators
• American Ninja Warrior