Complex sentence: The judges, as well as most of the public present, felt Rosario had done enough to win, and Rosario had become world lightweight champion by the unanimous score of 115-113 on all 3 judging cards.
Split into simpler sentences: The judges, as well as most of the public present, felt Rosario had done enough to win. He became world lightweight champion by the unanimous score of 115-113 on all 3 judging cards.