In round 13 of a <a href="https://en.wikipedia.org/wiki/Boxing" id="mwhQ" rel="mw:WikiLink" title="Boxing">boxing</a> match at New York City's <a href="https://en.wikipedia.org/wiki/Madison_Square_Garden_(1925)" id="mwhg" rel="mw:WikiLink" title="Madison Square Garden (1925)">Madison Square Garden</a>, <a href="https://en.wikipedia.org/wiki/Primo_Carnera" id="mwhw" rel="mw:WikiLink" title="Primo Carnera">Primo Carnera</a> knocks out <a href="https://en.wikipedia.org/wiki/Ernie_Schaaf" id="mwiA" rel="mw:WikiLink" title="Ernie Schaaf">Ernie Schaaf</a>. Schaaf dies four days later.