Schmeling defeated Louis, for the latters first professional defeat in 1936.

This was a reckoning of sorts, as it occurred on the one year-to-the-day anniversary of Lee's first and only professional defeat.

In this legendary fight, Hearns suffered his first professional defeat when Leonard stopped him in the 14th round.

It appeared to be his worst professional defeat in years.

After an average performance, Jackiewicz lost via points and suffered the first professional defeat.

The judges awarded Murillo a split decision victory, marking Dieppa's first professional defeat.

It was Rahman's first professional defeat.

Gurgel once again won via controversial split decision, handing Fujii her first professional defeat and becoming the inaugural 115-pound women's champion.

The first fight was declared a draw, but in the return match Schulz suffered his first professional defeat.

In the process, Hallman handed Hughes his first professional defeat.