The US Open is an innovative tournament with no precedent.
 Since 2020, all Grand Slams, ATP, and WTA tournaments apply this technology
==== Other regions ====Source=== Recent attendance ===Sources: US Open, Record Attendance 2019, City University of New York (CUNY)== See also ==List of US Open singles finalists during the Open Era, records and statistics== Notes ==== References ==== External links == Media related to US Open (tennis) at Wikimedia CommonsOfficial website

