6 things you didn't know about the US Open, according to Grand Slam champions

Robert Prange/Contributor/Getty Images

• The US Open — the final Grand Slam tennis tournament of the year — concludes on September 8.
• BI spoke with 2023 US Open runner-up Aryna Sabalenka and 2016 winner Stan Wawrinka.
• Sabalenka said the noise in the stadium can be "crazy for players to handle."

The US Open is well underway in New York City.

And while plenty of spectators, including A-listers like Serena Williams and Kerry Washington...