Head-to-headSammy Giammalva Jr vs Heinz Gunthardt🇺🇸Sammy Giammalva Jr1-12 confrontations🇨🇭Heinz GunthardtPar surfaceDur (+ indoor + carpet)1-0Terre battue0-1Gazon0-0Aucune rencontreHistorique des rencontresUS Open·1er tourDur🇺🇸Sammy Giammalva Jr●🇨🇭Heinz GunthardtTerminé1 sept. 19816-44-66-31-66-1Forest Hills WCT·3e tourTerre battue🇨🇭Heinz Gunthardt●🇺🇸Sammy Giammalva JrTerminé4 mai 19816-36-2