Serena Williams was fined $17,000 (£13,100) for the code violations that included calling the umpire a "liar" and "thief" in her US Open final loss.
Williams, beaten by Naomi Osaka, was docked a game for verbal abuse and had a point penalty for racquet smashing and a code violation for coaching.
Nadal retired injured from a Grand Slam match for the second time this year, having also pulled out of his Australian Open quarter-final against Marin Cilic in January
Juan Martin del Potro will compete in his first Grand Slam final for nine years after defending champion Rafael Nadal retired from their US Open semi-final.
Argentine third seed Del Potro was leading 7-6 (7-3) 6-2 when Nadal quit because of a knee problem.
Roger Federer looks glum as he sits courtside at the US Open; Roger Federer won the US Open title five times in a row between 2004 and 2008
Roger Federer has been knocked out of the US Open in the fourth round by world number 55 John Millman.
The 37-year-old Swiss had prioritised winning a sixth title at Flushing Meadows but was beaten 3-6 7-5 7-6 (9-7) 7-6 (7-3) in three hours 35 minutes.
Andy Murray was playing on Arthur Ashe Stadium for the first time since his 2016 quarter-final defeat by Kei Nishikori
Andy Murray's return to Grand Slam tennis ended in a four-set defeat by Spanish 31st seed Fernando Verdasco in the US Open second round.
The former British number one, playing his first Slam in 14 months, lost 7-5 2-6 6-4 6-4 in New York.
Andy Murray's previous Grand Slam match was his 2017 Wimbledon quarter-final defeat by Sam Querrey
Britain's Andy Murray enjoyed a winning return to Grand Slam tennis as he fought back to beat Australia's James Duckworth in the US Open first round.
The 31-year-old won 6-7 (5-7) 6-3 7-5 6-3 on the new Louis Armstrong Stadium at Flushing Meadows.
