Saitou debuted at Pro Tour
Chicago 2000. In
2006, Saitou won
Pro Tour Charleston as a member of
Team Kajiharu80, along with Tomohiro Kaji and
Shouta Yasooka. At the next Pro Tour, held in
Kobe, Saitou made his first individual top eight appearance. He lost in the quarterfinals to Pro Tour first-timer and eventual champion Jan-Moritz Merkel. At the end of the 2006 season, Saitou was dubbed the PoY maker, because in the past two seasons his teammates, Tsumura and Yasooka, had won the Player of the year title.
The following year, it would be his turn. In 2007, Saitou made his fourth Pro Tour top eight that year, in
Yokohama, losing to Kazuya Mitamura in the semifinals. He also top eighted Grand Prix
Singapore, and won Grand Prix
Strasbourg. At the end of the season, he won the
Player of the year title, making him the first player to do so without either winning a Pro Tour or reaching the top eight of multiple Pro Tours. The
2008 season saw Saitou finishing third at Pro Tour
Berlin and making the Top 8 of three Grand Prix, but falling 20 points short of defending his title. In
2009 Saitou won back to back
Extended Grand Prix in Singapore and Kobe. The following
season, he made the top eight of three more Grand Prix, winning in
Columbus. At Pro Tour Amsterdam it was announced that Saitou would be inducted into the
Hall of Fame. Two weeks before his induction Saitou was disqualified for stalling at Grand Prix Florence. He subsequently received an 18-month suspension from the DCI. One day before the Hall of Fame induction ceremony
Wizards of the Coast announced that Saitou would not be inducted due to his suspension. ==Accomplishments==