Yūichi Sugita (杉田 祐一, Sugita Yūichi^?, born 18 September 1988) is a Japanese tennis player who plays primarily on the ATP Challenger Tour.

Yūichi started his 2012 campaign by making it to the quarterfinals of the Chennai Open before falling to Nicolas Almagro in three close sets, knocking out eighth seed Oliver Rochus on the way.

Christopher Benjamin Rungkat (born January 14, 1990) is an Indonesian tennis player. He is the grandson of "Famous" Benny Rungkat, former chairman of the Indonesian Air Carriers Association. Christopher's father, Michael Alexander Fritz Rungkat, is of Dutch and Indonesian descent and his mom, Elfia Mirlianti, is full Indonesian descent. .In 2008, he won the final stage of French Open 2008 Boys' Doubles Juniors category with Finnish tennis player Henri Kontinen. He is the youngest ever Indonesian to be the All Indonesian Champion, and by the end of his junior career,he was awarded for Indonesian best promising athlete 2008

Rungkat also reached the final of the 2008 U.S. Open boy's final with Henri Kontinen.

In June 2010, he won the Tarakan Open International Men’s Futures tournament, his first international tournament title since going pro.

Christopher Spent his junior career in Europe by playing European junior circuit and he was based in Tennis Val (Valencia, Spain). He's the second Asian male player who ever won a junior French open doubles title after Kei Nishikori