Britain's Andy Murray has been drawn against controversial Australian Nick Kyrgios in the first round of the US Open, which begins on Monday.
World number 37 Kyrgios, 20, was fined $10,000 this month for an "insulting remark" to Stan Wawrinka.
Top seed Novak Djokovic takes on Joao Souza of Brazil in New York.
Women's defending champion Serena Williams, who is aiming to complete a calendar Grand Slam, will play Russian Vitalia Diatchenko, while men's defending champion Marin Cilic will face a qualifier.
Murray could face French Open champion Wawrinka in the quarter-finals and second seed Roger Federer in the semis.
Can Kyrgios cause Murray trouble?
It is arguably the toughest possible first-round draw, it is certainly the most high-profile - Kyrgios will bring plenty of baggage on court against Murray, along with his powerful game.
The Australian, just outside the seedings, is playing under a suspended 28-day ban and $25,000 (£16,200) fine as his behaviour is closely monitored following the comments to Wawrinka.
On-court microphones picked up Kyrgios making a lewd suggestion about the Swiss player's girlfriend.
The incident made global headlines and has raised the Kyrgios profile to such an extent that it is likely his contest with Murray will be a night match.
"Kyrgios has had a lot of trouble against Murray, who's able to defend against his game really well," said Darren Cahill, former coach to Andre Agassi, at Thursday's draw.
To add extra spice, if it were needed, Murray and Kyrgios are likely to meet again straight after the US Open when Britain face Australia in the Davis Cup semi-finals in Glasgow.
Nadal could block Djokovic
The main interest in the men's draw surrounded which side Murray would be on, and where eighth seed Rafael Nadal would land.
The Spaniard's slip down the rankings means he now lurks as a potential Grand Slam quarter-final opponent for his established rivals, this time Djokovic.
Nadal will need to get past Croatian teenager Borna Coric in the first round, with the 18-year-old having won their only previous meeting.
In-form second seed Federer plays world number 33 Leonardo Mayer in the first round, with Tomas Berdych a potential quarter-final opponent and Murray or Wawrinka in the semis.
World number one Djokovic remains the favourite, despite defeats by Murray and Federer in recent weeks.
Seven wins from history
Williams has won her last 28 matches at the tennis majors - she needs seven more to make history as only the fourth woman to complete the calendar Grand Slam.
The American, 34, already holds all four major titles stretching back to last year's US Open, has 21 in total and has won the last three US Opens.
Her last defeat at a Slam came against Alize Cornet at Wimbledon 2014.
Sloane Stephens, Madison Keys, her sister Venus and Maria Sharapova are potentially standing in the way this time, with Simona Halep seeded to be waiting in the final.
"I don't feel the pressure right now," Williams insisted. "I'm really just here to perform and do the best I can."
Britons searching for form
The British contingent could yet be swelled with four players still going in qualifying, but those already in the main draw - and not named Murray - will be hoping to find some form.
James Ward, who opens against Brazil's 30th seed Thomaz Bellucci, broke into the top 100 for the first time over the summer but has lost his last eight matches.
British number two Aljaz Bedene, 26, plays Latvia's 2014 French Open semi-finalist Ernests Gulbis.
Since taking Williams to the brink at Wimbledon, Heather Watson lost early in Washington and Cincinnati, with a decent run in Toronto in between. The world number 61 plays American Lauren Davis in round one.
Laura Robson, the former British number one, has won just two of her eight matches since returning from a serious wrist injury in June.
However, there were encouraging signs last time out in defeat by Christina McHale and she will not be without hope against world number 110 Elena Vesnina.