Canada's Leylah Fernandez eliminated by Alexandrova in 1st round at Cincinnati Open

Leylah Fernandez of Laval, Que., was ousted in the first round at the Western & Southern Open after falling 6-7, 7-5 to Russia's Ekaterina Alexandrova.

Serena Williams had been scheduled to face 19-year-old Emma Raducanu of Britain, the defending U.S. Open champion, in a first-round match on Monday that was pushed back to Tuesday because of what the tournament described as "a number of factors related to scheduling."

Raducanu was anxious to face Williams, 40, the 23-time Grand Slam winner who is preparing to walk away from tennis.

"It's an amazing opportunity to play the greatest tennis player of all time for probably the last time," Raducanu said Sunday. "For our careers to have crossed over, I'm really fortunate that I got to play her. Whatever happens, it's going to be an incredible experience for me and something I'll probably remember for the rest of my life."

Williams has said she wants to have another child and pursue business interests. She has not said what her last event will be, but she has made it sound as if her final farewell will come at the U.S. Open, which begins Aug. 29 in New York.

Canada's Fernandez upset in 1st round at Cincinnati Open:

Williams lost 6-2, 6-4 to Belinda Bencic on Wednesday night in Toronto in her first match since she announced her intentions.

In a first-round women's match Monday, unseeded 20-year-old American Amanda Anisimova upset ninth-seeded Daria Kasatkina of Russia 6-4, 6-4, while 14th-seeded Marin Cilic of Croatia, another former U.S. Open winner, breezed to a 6-3, 6-3 win over qualifier Jaume Munar of Spain.

Andy Murray pulled out a 7-6 (3), 5-7, 7-5 win over Stan Wawrinka on Monday in the first round, in a matchup of three-time Grand Slam champions trying to put injuries