It's really hard': Female stars criticise US Open tennis ball rules
Djokovic to miss US Open as organisers opt to respect government's COVID rules | Marca
The U.S. Open Descends Into Pandemic Precaution Chaos - The New York Times
Tennis' governing bodies continue to urge players to get vaccinated ahead of US Open | CNN
Tennis rules: Know how to play
Novak Djokovic passes verdict on rules preventing him from playing US Open | Tennis News - Hindustan Times
Andy Murray rules out returning to singles action at the US Open | Tennis News | Sky Sports
US Open confirms vaccine status will rule out Novak Djokovic from tournament | Novak Djokovic | The Guardian
As I See It: Tennis umpire's loyalty to rules sparked US Open controversy - The Mainichi
Alcaraz stops Tiafoe's US Open run for 1st Grand Slam final - WTOP News
US Open heat rules intensify glare on Del Potro's quest to outlast Nadal | US Open Tennis 2018 | The Guardian
US Open 101 - Official Site of the 2022 US Open Tennis Championships - A USTA Event
Tiebreaker rules and scoring system at the 2022 US Open - NBC Sports Washington
Tennis Scoring: Points, Sets & Games | Tennis Rules | USTA
2018 U.S. Open Tennis Tournament: By the Numbers
What to Wear at a Grand Slam
Novak Djokovic criticises 'impossible' and 'extreme' US Open protocols | Tennis News | Sky Sports
Novak Djokovic unlikely to play US Open with Grand Slam to 'respect' government vaccine rules - BBC Sport
Still Unvaccinated, Djokovic Says He Will Miss the U.S. Open - The New York Times
U.S. Open | History, Winners, & Facts | Britannica
