[{"Performer":"O'Reilly Auto Parts 300","URL":"OReilly-Auto-Parts-300"},{"Performer":"O'Reilly Auto Parts Outlaw Monster Truck Show","URL":"OReilly-Auto-Parts-Outlaw-Monster-Truck-Show"},{"Performer":"Oakland Athletics","URL":"Oakland-Athletics"},{"Performer":"Odessa Jackalopes","URL":"Odessa-Jackalopes"},{"Performer":"Ogden Raptors","URL":"Ogden-Raptors"},{"Performer":"Ohio Bobcats","URL":"Ohio-Bobcats"},{"Performer":"Ohio Bobcats Football","URL":"Ohio-Bobcats-Football"},{"Performer":"Ohio State Buckeyes","URL":"Ohio-State-Buckeyes"},{"Performer":"Ohio State Buckeyes Basketball","URL":"Ohio-State-Buckeyes-Basketball"},{"Performer":"Ohio State Buckeyes Football","URL":"Ohio-State-Buckeyes-Football"},{"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 Baseball","URL":"Oklahoma-Sooners-Baseball"},{"Performer":"Oklahoma Sooners Basketball","URL":"Oklahoma-Sooners-Basketball"},{"Performer":"Oklahoma Sooners Football","URL":"Oklahoma-Sooners-Football"},{"Performer":"Oklahoma State Cowboys","URL":"Oklahoma-State-Cowboys"},{"Performer":"Oklahoma State Cowboys Baseball","URL":"Oklahoma-State-Cowboys-Baseball"},{"Performer":"Oklahoma State Cowboys Basketball","URL":"Oklahoma-State-Cowboys-Basketball"},{"Performer":"Oklahoma State Cowboys Football","URL":"Oklahoma-State-Cowboys-Football"},{"Performer":"Oklahoma State Cowgirls","URL":"Oklahoma-State-Cowgirls"},{"Performer":"Oklahoma State Cowgirls Softball","URL":"Oklahoma-State-Cowgirls-Softball"},{"Performer":"Old Dominion Monarchs","URL":"Old-Dominion-Monarchs"},{"Performer":"Old Dominion Monarchs Football","URL":"Old-Dominion-Monarchs-Football"},{"Performer":"Old Glory DC","URL":"Old-Glory-DC"},{"Performer":"Omaha Lancers","URL":"Omaha-Lancers"},{"Performer":"Omaha Red Devils","URL":"Omaha-Red-Devils"},{"Performer":"Omaha Storm Chasers","URL":"Omaha-Storm-Chasers"},{"Performer":"Ontario Reign","URL":"Ontario-Reign"},{"Performer":"Open Wheel Clash","URL":"Open-Wheel-Clash"},{"Performer":"Open Wheel Showdown","URL":"Open-Wheel-Showdown"},{"Performer":"Oral Roberts Golden Eagles","URL":"Oral-Roberts-Golden-Eagles"},{"Performer":"Oral Roberts Golden Eagles Baseball","URL":"Oral-Roberts-Golden-Eagles-Baseball"},{"Performer":"Oral Roberts Golden Eagles Basketball","URL":"Oral-Roberts-Golden-Eagles-Basketball"},{"Performer":"Oregon Ducks","URL":"Oregon-Ducks"},{"Performer":"Oregon Ducks Baseball","URL":"Oregon-Ducks-Baseball"},{"Performer":"Oregon Ducks Basketball","URL":"Oregon-Ducks-Basketball"},{"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 Basketball","URL":"Oregon-State-Beavers-Basketball"},{"Performer":"Oregon State Beavers Football","URL":"Oregon-State-Beavers-Football"},{"Performer":"Orlando Magic","URL":"Orlando-Magic"},{"Performer":"Orlando Pride","URL":"Orlando-Pride"},{"Performer":"Orlando Solar Bears","URL":"Orlando-Solar-Bears"},{"Performer":"Ottawa RedBlacks","URL":"Ottawa-RedBlacks"},{"Performer":"Ottawa Senators","URL":"Ottawa-Senators"},{"Performer":"Ottawa Titans","URL":"Ottawa-Titans"}]