In 2007 season, he played all 34 matches[1] and Antlers won the champions in J1 League for the first time in 6 years.

[5] In April 1999, Motoyama was selected Japan U-20 national team for 1999 World Youth Championship.

[6] At this tournament, he played all 7 matches as left side midfielder and Japan won the 2nd place.

On June 18, 2000, Motoyama debuted for Japan national team under manager Philippe Troussier against Bolivia.

[7] In September 2000, Motoyama was selected Japan U-23 national team for 2000 Summer Olympics.

[6] In September 2003, Motoyama played for Japan under manager Zico for the first time in 3 years.