[{"Performer":"O'Reilly Auto Parts 300","URL":"OReilly-Auto-Parts-300"},{"Performer":"Oakland Athletics","URL":"Oakland-Athletics"},{"Performer":"Oakland Raiders","URL":"Oakland-Raiders"},{"Performer":"Oakland University Golden Grizzlies","URL":"Oakland-University-Golden-Grizzlies"},{"Performer":"Oakland University Golden Grizzlies Basketball","URL":"Oakland-University-Golden-Grizzlies-Basketball"},{"Performer":"Ohio Bobcats","URL":"Ohio-Bobcats"},{"Performer":"Ohio Bobcats Basketball","URL":"Ohio-Bobcats-Basketball"},{"Performer":"Ohio Bobcats Football","URL":"Ohio-Bobcats-Football"},{"Performer":"Ohio Machine","URL":"Ohio-Machine"},{"Performer":"Ohio State Buckeyes","URL":"Ohio-State-Buckeyes"},{"Performer":"Ohio State Buckeyes Football","URL":"Ohio-State-Buckeyes-Football"},{"Performer":"Ohio State Buckeyes Hockey","URL":"Ohio-State-Buckeyes-Hockey"},{"Performer":"OKC Energy","URL":"OKC-Energy"},{"Performer":"Oklahoma City Dodgers","URL":"Oklahoma-City-Dodgers"},{"Performer":"Oklahoma City Thunder","URL":"Oklahoma-City-Thunder"},{"Performer":"Oklahoma Sooners","URL":"Oklahoma-Sooners"},{"Performer":"Oklahoma Sooners Basketball","URL":"Oklahoma-Sooners-Basketball"},{"Performer":"Oklahoma Sooners Football","URL":"Oklahoma-Sooners-Football"},{"Performer":"Oklahoma Sooners Softball","URL":"Oklahoma-Sooners-Softball"},{"Performer":"Oklahoma State Cowboys","URL":"Oklahoma-State-Cowboys"},{"Performer":"Oklahoma State Cowboys Football","URL":"Oklahoma-State-Cowboys-Football"},{"Performer":"Old Dominion Monarchs","URL":"Old-Dominion-Monarchs"},{"Performer":"Old Dominion Monarchs Football","URL":"Old-Dominion-Monarchs-Football"},{"Performer":"Omaha Heart","URL":"Omaha-Heart"},{"Performer":"Omaha Storm Chasers","URL":"Omaha-Storm-Chasers"},{"Performer":"Orange Bowl","URL":"Orange-Bowl"},{"Performer":"Orange County Breakers","URL":"Orange-County-Breakers"},{"Performer":"Orange County SC","URL":"Orange-County-SC"},{"Performer":"Oregon Ducks","URL":"Oregon-Ducks"},{"Performer":"Oregon Ducks Baseball","URL":"Oregon-Ducks-Baseball"},{"Performer":"Oregon Ducks Football","URL":"Oregon-Ducks-Football"},{"Performer":"Oregon State Beavers","URL":"Oregon-State-Beavers"},{"Performer":"Oregon State Beavers Baseball","URL":"Oregon-State-Beavers-Baseball"},{"Performer":"Oregon State Beavers Football","URL":"Oregon-State-Beavers-Football"},{"Performer":"Orlando City SC","URL":"Orlando-City-SC"},{"Performer":"Orlando Pride","URL":"Orlando-Pride"},{"Performer":"Ottawa Champions","URL":"Ottawa-Champions"},{"Performer":"Ottawa Fury FC","URL":"Ottawa-Fury-FC"},{"Performer":"Ottawa RedBlacks","URL":"Ottawa-RedBlacks"},{"Performer":"Outlaw Showdown","URL":"Outlaw-Showdown"},{"Performer":"Overton's 400","URL":"Overtons-400"},{"Performer":"Overwatch League Grand Finals","URL":"Overwatch-League-Grand-Finals"}]