McGregor has taken mixed martial arts by storm, and after 14 months of back and forth he gets a crack at Aldo, who has not lost since 2005 and will be making his eighth title defense.
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In the co-main event, undefeated UFC middleweight champion Chis Weidman defends his title against top contender Luke Rockhold in a battle between two of the most well-rounded fighters on the planet.
Here is everything you need to know about UFC 194: Aldo vs. McGregor:
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What time is Conor McGregor vs. Jose Aldo, UFC 194?
Pay-per-view coverage begins at 10 p.m. ET. McGregor and Aldo should enter the Octagon about 12:30 a.m. Preliminary fights begin at 6:30 p.m. (all times ET).
What TV channel is showing Conor McGregor vs. Jose Aldo, UFC 194?
Preliminary fights can be viewed on Fox Sports 1 at 8 p.m. The main card on pay-per-view can be purchased for $59.99.
Where can I watch Conor McGregor vs. Jose Aldo, UFC 194, online?
The first four preliminary fights are available for UFC.com Fight Pass members beginning at 6:30 p.m.
Who is fighting on Conor McGregor vs. Jose Aldo, UFC 194?
Main card:
— Jose Aldo (25-1-0, 7-0 UFC) vs. Conor McGregor (18-2, 6-0 UFC) — UFC featherweight championship
— Chris Weidman (13-0, 9-0 UFC) vs. Luke Rockhold (14-2, 4-1 UFC) — UFC middleweight championship
— Ronaldo Souza (23-2-0, 5-0 UFC) vs. Yoel Romero (10-1, 6-0 UFC) — middleweight No. 1 contender fight
— Demian Maia (21-6, 15-6 UFC) vs. Gunnar Nelson (14-1-1, 5-1 UFC) — welterweight
— Max Holloway (14-3, 10-3 UFC) vs. Jeremy Stephens (24-11, 11-10 UFC) — featherweight
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Fox Sports 1 prelims:
— Urijah Faber (32-8, 8-4 UFC) vs. Frankie Saenz (11-2, 3-0 UFC) — bantamweight
— Tecia Torres (6-0, 2-0 UFC) vs. Jocelyn Jones-Lybarger (6-1, 0-0 UFC) — strawweight
— Warley Alves (10-0, 3-0 UFC) vs. Colby Covington (8-0, 3-0 UFC) — welterweight
— Leonardo Santos (14-4-1, 3-0-1 UFC) vs. Kevin Lee (11-1, 4-0 UFC) — lightweight
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Fight Pass prelims:
— Joe Proctor (11-3, 4-2 UFC) vs. Mogomed Mustafaev (12-1, 1-0 UFC) — lightweight
— John Makdessi (12-4, 6-4 UFC) vs. Yancy Medeiros (11-3, 4-3 UFC) — lightweight
— Court McGee (16-4, 5-3 UFC) vs. Marcio Alexandre (13-2, 0-2 UFC) — welterweight