Complex sentence: Both of these rivalries culminated in matches at the TLC pay-per-view, where all of the League members successful in their separate singles matches, with Del Rio and Sheamus both retaining their championships (the latter needing help from his cohorts).
Split into simpler sentences: Both of these rivalries culminated in matches at the TLC pay-per-view. At TLC, all of the League members successful in their separate singles matches, with Del Rio and Sheamus both retaining their championships (the latter needing help from his cohorts).