Ryo Ishikawa Japanese G-Shock Commercial November 26, 2013 by Yein Jee Black and white commercial for G-Shock watches, featuring popular Japanese golfer Ryo Ishikawa. Bashful prince Ishikawa was the youngest person to win a professional golf tournament back in 2007, when he was 15. His record lasted a few years before broken by New Zealand golfer Lydia Ko in 2012. Ishikawa turned pro in 2008 and is now one of the top players in Japan. He’s also a commercial darling. His fans named him the bashful prince for his shy demeanour in early days.