Complex sentence: Chiyoōtori was promoted to "makuuchi" for the second time in the subsequent January 2014 tournament, ironically this way the same tournament that his older brother Chiyomaru would win the "jūryō" championship.
Split into simpler sentences: Chiyoōtori was promoted to "makuuchi" for the second time in the subsequent January 2014 tournament. Ironically this was the same tournament that his older brother Chiyomaru would win the "jūryō" championship.