Call it a home court advantage for Long Island’s Amanda Sobhy.

The Sea Cliff native and three-time Pan Am squash gold medalist advanced to the semifinals of the J.P Morgan Tournament of Champions at Grand Central Terminal after defeating No. 6 Alison Waters of England in Tuesday’s quarterfinals.

Sobhy, ranked No. 8 in the world, will play Nouran Gohar of Egypt on Wednesday at 5 p.m.

Sobhy already had pulled off one of the tournament’s most stunning upsets, beating defending champion and world No. 2 Raneem El Welily, 3-1, in the second round.

Sobhy, who graduated from Harvard in 2015, won four intercollegiate championship titles and went 62-0 during her college squash career.