Complex sentence: LSU earned the second spot based on a stronger computer ranking than USC and a No.2 human poll ranking, and went on to claim the BCS championship with a 21--14 win over Oklahoma in the Sugar Bowl.
Split into simpler sentences: LSU earned the second spot based on a stronger computer ranking than USC and a No.2 human poll ranking. The Tigers went on to claim the BCS championship with a 21--14 win over Oklahoma in the Sugar Bowl.