Having been a pivotal figure in the Switzerland team that stunned the world in winning the Under-17 World Cup on the country's maiden appearance in the tournament in 2009, Charyl Chappuis is no stranger to surprises.

Fast-forward seven years and the Swiss-born midfielder is now part of a Thailand side plotting to make one of the biggest upsets in Asian World Cup qualifying history when it faces Japan in a final-round Group B clash in Bangkok on Tuesday.

Chappuis' face lights up when he recalls playing against a Japan team that featured current senior international Takashi Usami in the Group phase of the U-17 World Cup.