is a Japanese football player. and he played many matches from 1999 season. In 2000, Antlers won the champions all three major title in Japan; J1 League, J.League Cup and Emperor's Cup first time in J1 League history. The club also won the champions 2001 J1 League for 2 years in a row. In 2002, he was given the number "10" shirt as Bismarck successor. Antlers also won the champions in 2002 J.League Cup.
In 2007 season, he played all 34 matches
In 2016, Motoyama moved to his local club Giravanz Kitakyushu in J2 League. He played many matches in 2016 season. However Giravanz was finished at the bottom place of 22 clubs and was relegated to J3 League. From 2017 season, he could not play many matches for injuries. At the end of 2019 season, he opted to retire after not appearing at all for Giravanz that year.
Motoyama came out of retirement when it was announced at the end of 2020 that he would play for Malaysia Premier League team Kelantan United, making this his first team outside of Japan.
International career
In April 1999, Motoyama was selected Japan U-20 national team for 1999 World Youth Championship. 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.
In September 2000, Motoyama was selected Japan U-23 national team for 2000 Summer Olympics. He played 3 matches as substitute midfielder.
{| class="wikitable" style="text-align:center"
|-
! colspan=3 | Club performance
! colspan=2 | League
! colspan=2 | Cup
! colspan=2 | League Cup
! colspan=2 | Continental
! colspan=2 | Total
|-
! Season !! Club !! League
! Apps !! Goals
! Apps !! Goals
! Apps !! Goals
! Apps !! Goals
! Apps !! Goals
|-
! colspan=3 | Japan
! colspan=2 | League
! colspan=2 | Emperor's Cup
! colspan=2 | J.League Cup
! colspan=2 | AFC
! colspan=2 | Total
|-
|1998||rowspan="18"|Kashima Antlers||rowspan="18"|J1 League||1||0||4||3||0||0||colspan="2"|-||5||3
|-
|1999||18||0||0||0||2||0||colspan="2"|-||20||0
|-
|2000||18||6||5||0||3||1||colspan="2"|-||26||7
|-
|2001||21||3||3||2||3||0||colspan="2"|-||27||5
|-
|2002||24||3||4||2||7||1||colspan="2"|-||35||6
|-
|2003||20||4||4||1||4||1||1||0||29||6
|-
|2004||24||3||2||0||0||0||colspan="2"|-||26||3
|-
|2005||32||5||3||1||0||0||colspan="2"|-||35||6
|-
|2006||27||2||4||1||7||0||colspan="2"|-||38||3
|-
|2007||34||2||5||1||9||4||colspan="2"|-||48||7
|-
|2008||32||3||1||0||2||0||7||3||42||6
|-
|2009||27||2||3||0||2||0||6||1||38||3
|-
|2010||15||2||5||1||2||0||0||0||22||3
|-
|2011||13||0||3||0||1||0||3||0||20||0
|-
|2012||17||3||3||0||6||0||colspan="2"|-||25||3
|-
|2013||24||0||2||0||7||1||colspan="2"|-||34||1
|-
|2014||12||0||0||0||2||1||colspan="2"|-||14||1
|-
|2015||6||0||2||0||0||0||4||0||12||0
|-
!colspan="3"|Total||365||38||53||12||57||9||21||4||496||63
|-
|2016||rowspan="4"|Giravanz Kitakyushu||J2 League||36||0||2||0||colspan="2"|-||colspan="2"|-||38||0
|-
|2017||rowspan="3"|J3 League||5||0||0||0||colspan="2"|-||colspan="2"|-||5||0
|-
|2018||9||0||colspan="2"|-||colspan="2"|-||colspan="2"|-||9||0
|-
|2019||0||0||0||0||colspan="2"|-||colspan="2"|-||0||0
|-
!colspan="3"|Total||50||0||2||0||colspan="2"|-||colspan="2"|-||52||0
|-
! colspan=3 | Career total
!415||38||55||12||57||9||21||4||548||63
|}