Complex sentence: Over the next four years (1951,1952,1953,1954), NEPTUNE "USMC" won 4 championships, making the Lazio region the most titled of the Italian championship, with 17 league titles.
Split into simpler sentences: Over the next four years (1951,1952,1953,1954), the prize was extended to 4 championships. Since then the company Lazio became the most titled of the Italian championship, up to count as many as 17 league titles.