French Open Day 3

Updated 1802 GMT (0202 HKT) May 24, 2016
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Andy Murray celebrates after winning his first-round match over Radek Stepanek. But it wasn't easy ... Clive Brunskill/Getty Images Europe/Getty Images
The crafty Stepanek, a former world No. 8, extended the second seed to five sets and was two points away from winning at 5-4 in the fifth. MIGUEL MEDINA/AFP/AFP/Getty Images
But the 37-year-old eventually exited 7-5 in the fifth to fall to 15-24 in fifth sets in his career. PHILIPPE LOPEZ/AFP/AFP/Getty Images
Murray now has a seemingly easier match in the second round against France's Mathias Bourgue. PHILIPPE LOPEZ/AFP/AFP/Getty Images
Two of Murray's rivals for the title, world No. 1 Novak Djokovic and Rafael Nadal, advanced with little difficulty. Djokovic, seen here, beat Yen-Hsun Lu in 90 minutes. PHILIPPE LOPEZ/AFP/AFP/Getty Images
Nadal, the nine-time French Open champion, crushed Australian Sam Groth in 82 minutes. Dennis Grombkowski/Getty Images Europe/Getty Images
Another grand slam winner, Angelique Kerber, fell in her opener to Kiki Bertens. She was troubled by a shoulder injury and needed to take a medical timeout. Clive Brunskill/Getty Images Europe/Getty Images
Her fellow grand slam winner, Victoria Azarenka, also endured physical issues. She retired with a knee injury trailing Karin Knapp 4-0 in the third set. ERIC FEFERBERG/AFP/AFP/Getty Images
Already a strong favorite at the French Open, their defeats make Serena Williams an even stronger favorite. Williams began by routing Magdalena Rybarikova 6-2 6-0 in 42 minutes. PHILIPPE LOPEZ/AFP/AFP/Getty Images