Complex sentence: On September 12,1907, Burke fought black heavyweight champion Jack Johnson at Smith's theatre in Bridgeport, Connecticut, losing decisively in a one-sided six round newspaper decision where he was knocked down at least once in every round.
Split into simpler sentences: On September 12,1907, Burke fought black heavyweight champion Jack Johnson at Smith's theatre in Bridgeport, Connecticut, losing decisively in a one-sided six round newspaper decision. Clearly outmatched, Burke was knocked down at least once in every round.