Prior to his teaching career , Peter competed briefly on the ATP Challenger Tour and satellite circuits achieving world rankings in singles and doubles .
Peter is certified by the USPTA as a P - 1 professional and is also a certified specialist in Competitive Player Development .
Prior to Peter 's teaching career , Peter competed briefly on the ATP Challenger Tour and satellite circuits achieving world rankings in singles and doubles .
Peter is certified by the USPTA as a P - 1 professional and is also a certified specialist in Competitive Player Development .