Sam Querrey will always remember his big victories over Novak Djokovic, Andy Murray and Rafael Nadal.

Serbia's Novak Djokovic serves against Lithuania's Ricardas Berankis in the second round match of the French Open tennis tournament at the Roland Garros stadium in Paris, France, Thursday, Oct. 1, 2020. (AP Photo/Alessandra Tarantino)PARIS – At the mere mention of Novak Djokovic’s name, at the mere thought of sharing a court with a 17-time Grand Slam champion and the French Open’s No. He used these phrases: “really, really excited” and “really, really happy” and “really, really special.”Galan is, after all, ranked 153rd and never had won so much as one main-draw match at any major tournament until this week. Jelena Ostapenko, the 2017 French Open champ, plays 87th-ranked Paula Badosa, who arrived in Paris with a 1-5 Grand Slam record. “Well,” came Galan’s reply, “I was wondering that, to be honest.”And then he launched into a story about how he was “really, really nervous” before playing former top 10-member David Goffin in the Davis Cup Finals last November.