And before those two contests, Sam Querrey was tasked with facing Denis Shapovalov—just 18 and unseeded, but who may be the toughest challenger of them all. Why? The Canadian has ice in his veins.

Shapovalov recently shared his thoughts about USA ice hockey player Auston Matthews, whose team recently lost to Canada in the 4-Nations face-off final. Following this upset, he was asked in an ...