Complex sentence: In his senior year, in which he was team captain, USC began its intersectional rivalry with Notre Dame; the team finished 8-2, with both losses (to Stanford and Notre Dame) coming by 13-12 scores.
Split into simpler sentences: In his senior year, in which he was team captain, USC began its intersectional rivalry with Notre Dame. The team finished 8--2, with both losses to Stanford and Notre Dame both coming by 13--12 scores.