(by: Stephanie Sun) In this Butterfly Training Tips, Rogelio Castro is working on Opening attack from underspin, followed by a loop. https://youtu.be/pbxRHaBxS6Y?si=fPhDV3LvLAsIcYRy Stay “In The Loop” with Butterfly professional table tennis equipment, table tennis news, table tennis technology, tournament results, and We Are Butterfly players, coaches, clubs and more