He made his professional debut at age 17 in June 1993, without a single fight as an amateur. He won the OPBF Super Featherweight title in 1996, and challenged the WBA Super Featherweight champion
Yong-Soo Choi in 1997. The fight was a close draw, and Choi retained his title. Hatakeyama challenged the Japanese super-featherweight champion in March 1998, winning by 9th-round TKO. He immediately returned his title to prepare for another world title match. He fought
Yong-Soo Choi again for the WBA title on September 5, 1998, this time winning by decision to gain his first world title. Hatakeyama made his first defense with a draw, but lost his second defense match against the mandatory challenger
Lakva Sim in 1999. He announced his retirement after the fight, but resumed training in 2000, moving up to the lightweight division. Hatakeyama's first fight after returning from retirement was a world title match, fighting Gilberto Serrano for the WBA lightweight title on June 11, 2000. He won by technical knockout in the 8th round, becoming the fourth Japanese boxer to have captured world titles in two different weight classes. Hatakeyama chose fellow Japanese boxer Hiroyuki Sakamoto to challenge his title, and the two fought an epic fight in October, 2000. Hatakeyama win Sakamoto by TKO in the 10th round, making his first defense. In February, 2001, he fought American born fighter Rick Yoshimura, who had defended the Japanese lightweight title 22 consecutive times. Hatakeyama managed to keep his title with a draw, but Yoshimura would have won the fight if he had not lost a point for a foul. In July, 2001, he fought former lightweight champion and mandatory challenger
Julien Lorcy for his third defense. Hatakeyama pushed Lorcy against the ropes several times, but was pummeled repeatedly by Lorcy, and lost the fight by decision. Hatakeyama officially retired after the fight at the young age of 25. His record was 24-2-3 (19 KO). ==Professional boxing record==