Complex sentence: However, former "yokozuna" Umegatani Tōtarō I had taught him that "yokozuna" mustn't be defeated, so he recorded many draws lastly in order not to lose.
Split into simpler sentences: However, former "yokozuna" Umegatani Tōtarō I had taught him that "yokozuna" mustn't be defeated. He recorded many draws lastly in order not to lose.