Mark O. MadsenMadsen, pioneer in Danish combat sports, retires4MBrett OkamotoPer Haljestam/USA TODAY Sports
UFC 273 results: Volkanovski and Sterling retain belts, Chimaev-Burns is an instant classic2YESPNJeff Bottari/Zuffa LLC
Ranking the fights at UFC 273: There's much more than UFC gold at stake2YJeff WagenheimChris Unger/Zuffa LLC