Jill Teichmann (*1997 / SUI) - forehand impact aka ball on the strings in her winning match during the Fed Cup qualification round tie Switzerland - Canada - Swiss Tennis Arena - Biel/Bienne - Switzerland - February 2020
Jill Teichmann (*1997 / SUI) - forehand impact aka ball on the strings in her winning match during the Fed Cup qualification round tie Switzerland - Canada - Swiss Tennis Arena - Biel/Bienne - Switzerland - February 2020