Complex sentence: Real Madrid got off to a good start of the 2003--04 season, defeating Mallorca in the Spanish Supercup, and at mid-season the team topped the La Liga table and was in contention for the Spanish Cup and UEFA Champions League trophies.
Split into simpler sentences: Real Madrid got off to a good start of the 2003--04 season, defeating Mallorca in the Spanish Supercup. By mid-season, the team topped the La Liga table and was in contention for the Spanish Cup and UEFA Champions League trophies.