Complex sentence: After his loss to Hostak, Kreiger moved up to Light Heavyweight, and fought his last fight as a Heavyweight, against Lee Savold in July 1941, his fifth loss in his final six fights.
Split into simpler sentences: After his loss to Hostak, Kreiger moved up to Light Heavyweight. He fought his last fight as a Heavyweight, against Lee Savold in July 1941, his fifth loss in his final six fights.