Complex sentence: Currently undefeated in mixed martial arts, he is also known as the first man to knock out former UFC champion Anderson Silva in MMA competition, the defeat ended Silva's seventeen fight undefeated streak which stretched from 2006-2013.
Split into simpler sentences: Currently undefeated in mixed martial arts, he is also known as the first man to knock out former UFC champion Anderson Silva in MMA competition. The defeat ended Silva's seventeen fight undefeated streak which stretched from 2006-2013.