"....the work of Chasers Ryuichi Yamaguchi, Kimiko Kurosawa and Yoshi Wakahisa should not be overlooked."
-- match report Bulgaria v Japan, Daily Prophet, 6 July 2014 (Pm)
Yoshi Wakahisa was a Chaser for Japan’s National Team at the 2014 Quidditch World Cup.
Wakahisa was a member of the Japanese team that won their 2014 Quidditch World Cup matches against Poland and Nigeria, but then lost to Bulgaria at the semi-final stage. They won against the United States to secure third place overall (Pm).
Other canon notes and references
Yoshi is a Japanese name with several meanings, depending on how it is written, including: 吉 (yoshi) meaning "good luck", 義 (yoshi) meaning "righteous" and 良 (yoshi) meaning "good, virtuous, respectable" (Behind the Name).
Wakahisa may derive from two Japanese words: waka (わか)(若 稚) meaning "youth, child, young" and hisa (ひさ)(飛砂) meaning "blown sand, sand drift" (Tangorin).
From the Web
Writing by J.K. Rowling on Pottermore:
Screenshots of the Daily Prophet's coverage of the 2014 Quidditch World Cup: http://imgur.com/a/AXutv