Were Yamaha rackets more popular in Japan / Asia in the 80/90s? I ask because I kinda recall that these rackets and others like the Hi-Flex series did exist in the UK, but they would be difficult to find and usually covered in dust they were so infrequently bought. I have a suspicion they were expensive for retailers (less margin) so probably couldn't compete with Wilson, Dunlop etc. Not to mention the low marketing profile other than Sabatini. I wonder if there were any Japanese Pros that used Yamaha throughout their careers.