The 25th WGU Chairperson Cup Tournament was held on June 10, 2018 at the Uruma Garden in the Gateball playground in Buenos Aires City as part of the annual important events organized by the Asociacion Argentina de Gateball.

The history of this tournament goes back to 1993. In September of 1993 when Ms. Kiyoko Ono, former WGU chairperson and Mr. Takashi Ono, then WGU president visited Argentina, they donated a full set of Gateball equipment including sticks, balls, and line tapes. That led WGU to donate the Championship Cup. On April 24, 1994, the 1st WGU Chairperson Cup Tournament was launched. Since then, every year, a big memorial ceremony has been organized together when the WGU Chairperson Cup Tournament is held.

In this tournament, 10 teams from each of senior and middle-aged teams participated. Total participants were 100 people. Each team played 3 games in the preliminary leagues and the tournament matches followed.

The final results were as follows;

Tournament for  Senior Teams
Winner　　　【Yonabaru】
Second place　【Naka】　
Third place　【Hinode】　
Third place　【Burusako B】

Tournament for Middle-aged Teams
Winner　　　　【Diego】
Second place　【Hanabi】
Third place　　【Lemon】
Third place　　【Hinode】