Salzenstein is the man. I remember seeing him back in his Stanford days and have followed his career.
Definitely not 'just another pro trying to make a buck'. Hello, he has a degree from Stanford....If he was not a tennis player, he would be a top exec. somewhere.
He is educated and intelligent, which is not so common on the Tour. His videos are clear and helpful for all levels of play.
HEAD Graphene Radical Pro 355g 7HL
Pro's Pro Strings- Exclusive North American Distributor