is a Japanese footballer

Football (soccer)

Association football, more commonly known as football or soccer, is a sport played between two teams of eleven players with a spherical ball...

 who plays as a defender

Defender (football)

Within the sport of association football, a defender is an outfield player whose primary role is to prevent the opposition from attacking....

 for Pattaya United of the Thai Premier League.

Club career

He started his career playing for his faculty team in the Tokyo University, soon moving on into the Japan Football League

Japan Football League

The is the 3rd tier of the Japanese association football league system, following J. League Division 1 and J. League Division 2. Also known as the JFL, it is generally considered as the top amateur league in Japan although in reality it is a semi-professional league as many full-time footballers...

, the 3rd tier of the Japanese football league system

Japanese football league system

The Japanese association football league system is organized in a pyramidal shape similar to football league systems in many other countries around the world...

 to play for ALO's Hokuriku

ALO's Hokuriku

were a Japanese football club based in Toyama, the capital city of Toyama Prefecture. They played in the Japan Football League. Their team colour was blue....

, where he was nominated for the Select Team in 2005.

In 2005, he was selected by J.League club Albirex Niigata

Albirex Niigata

is a Japanese J. League Division 1 association football team. Despite the club's relative youth, only joining the J. League in 1999, Albirex are one of Japan's best supported teams. In 2003, while still playing in the second tier of Japanese football , Albirex attracted the best average crowd in...

 to become a member of its satellite division in Singapore

Singapore

Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...

. There, Yamamoto was eventually selected to be one of the All West Team in the S-League All Star Game in 2006.

He returned to Japan to play for the regional Hokushin'etsu League team Valiente Toyama in 2007, but returned to Singapore to play for Sengkang Punggol

Sengkang Punggol FC

Hougang United Football Club is a professional football club in Singapore's S.League. The club first made their debut in Singapore's S.League in 2006 under the name Sengkang Punggol Football Club. The club was a merger of two football clubs that previously played in the S.League – namely, Paya...

in the 2008 season.