“Jeff’s work is extremely detailed and precise. He finds out the specific needs of his players and then brings up their weaknesses. When Beier began training with Jeff, her ranking was #102 ITF and it went up to #18 ITF within 6 months. I recommend players who want to improve to see Jeff.”
Pamela and Oty Ko (Parents of Beier Ko-Member of World Cup Canadian Team /Nationally ranked Harvard University Tennis player)