Complex sentence: Aloysius Martin "Lou" Thesz (April 24,1916--April 28,2002) was an American professional wrestler, who is regarded as one of, if not the, greatest wrestler of all time.
Split into simpler sentences: Aloysius Martin "Lou" Thesz (April 24,1916--April 28,2002) was an American professional wrestler. Thesz is regarded as one of, if not the, greatest wrestler of all time.