Sendai Tanaka

is a Japanese boxing trainer. He is one of the few outstanding trainers from Asia, and has a reputation especially for his focus mitts training. and lightweight divisions by February 1994. He began working in Mexico, but his final destination was Argentina. Tanaka loves Argentina, and boxing in that country. Whenever Tanaka has time to spare, he headed from Mexico to Argentina.

When Tanaka was twenty-two years old, then twenty-one-year-old Marco Antonio Barrera came to the gym where he was training, and asked for his focus mitts workout. Barrera was to fight for the world title for the first time in March 1995. After training for the day, Tanaka agreed to become his co-trainer with Rudy Pérez in response to his request. During Barrera's rest period, Tanaka observed the teaching methods of a variety of trainers. He learned at gatherings and conferences in Mexico, the United States and Argentina. He also received their guidance to learn the techniques, and coached boxers there. saying that they could have lived a happy boxer life since Brusa was in their corners. When Brusa had coached the Golden Boy-promoted boxers in Los Angeles and Big Bear City, California, Tanaka studied under him. While instructing Jorge Linares intensively, he made some other boxers spar with Barrera, or made them participate in his training camps. In Linares' first world title shot in Las Vegas, Nevada in July 2007, Tanaka served as the chief second among Rudy Pérez, Rudy Hernández and Kenny Adams. Just before the gong sounded, Tanaka tapped on his back saying that "Thanks for making me a second of the world champion. Let's go". Tanaka later told that he changed the plan during the fight and Linares neatly ran it since he was a superior boxer. Jorge Linares, Román González, Takahiro Aō et al. In March 2011, Tanaka's hometown Higashimatsushima was devastated by the Tōhoku earthquake. His two-story family home's first floor was submerged by the tsunami. Although his family was safe, his nearby relatives were swallowed by the tsunami. However, since Aō's first defense was scheduled in early April, Tanaka remained in Tokyo saying nothing about it, and continued training. Tanaka had been chosen for the twenty-second Eddie Townsend Award in 2011, but declined it for personal reasons.

Every morning, he has been running and training his abdominal muscles.