Mr Shapovalov’s parents emigrated to Israel from Russia in the 1990s, and the family moved to Canada while Denis was still a baby.
His mother said: “Some years ago, I wanted Denis to compete for Canada at the Maccabiah Games in Israel but at that stage he was not good enough.”
Mr Shapovalov defeated British champion Andy Murray in straight sets during the third round.
The Canadian player then beat eighth seed Roberto Bautista Agut 6-1, 6-3, 7-5 during the round of 16 on Monday.
In a five-set quarter final match on Wednesday, Mr Shapovalov saw off Russian 25th seed Karen Khachanov, paving way for the Israel-born player to reach the semi-finals.