Complex sentence: Cerezo Osaka won the tournament first time as a J. League club, and first time since 1974 when the club was playing for Japan Soccer League as Yanmar Diesel.
Split into simpler sentences: Cerezo Osaka won the tournament for the first time as a J. League club. It had won the cup 43 years ago, in 1974 when the club was playing for Japan Soccer League as Yanmar Diesel.