Abarenbou Rikishi!! Matsutarou

Both are wrestling themed anime and involve a MC who got his butt kick by a bad ass wrestler before getting into the sport. Both MCs have guts to even think about getting into such sport. The MC from one anime is a girl whose honor was ruined by a cocky female wrestler, while the MC in the other anime is a lazy and rowdy tough guy who got owned when he insulted a group of sumo wrestlers. One is based on a WWE diva theme, while the other is more into the traditional Japanese sumo wrestling. 

Sumo with scumbags, though it's hard to top Matsutaro. 

Both are about sumo fights. 

Both are fighting sports anime about a fighter growing up. 

Both are sport anime where the main character is influenced to take up the sport due to girl problems. Both protagonists are alike in personality and are hated by those around them for being aggressive. Only through loss do both take training seriously, otherwise they are extremely arrogant. 

Both are fighting sports anime about a fighter growing up.