At the <a href="https://en.wikipedia.org/wiki/Caesars_Superdome" id="mwAUw" rel="mw:WikiLink" title="Caesars Superdome">Superdome</a> in <a href="https://en.wikipedia.org/wiki/New_Orleans" id="mwAU0" rel="mw:WikiLink" title="New Orleans">New Orleans</a>, <a href="https://en.wikipedia.org/wiki/Muhammad_Ali" id="mwAU4" rel="mw:WikiLink" title="Muhammad Ali">Muhammad Ali</a> outpoints <a href="https://en.wikipedia.org/wiki/Leon_Spinks" id="mwAU8" rel="mw:WikiLink" title="Leon Spinks">Leon Spinks</a> in a rematch to become the first boxer to win the world <a href="https://en.wikipedia.org/wiki/Heavyweight" id="mwAVA" rel="mw:WikiLink" title="Heavyweight">heavyweight</a> title three times.