Sport: Tennis

Rafael Nadal cruised past Karen Khachanov to set up a quarterfinal against an inspired Dominic Thiem, who had earlier dumped Novak Djokovic out of the Masters in Monaco.
Williams, 36, is a three-time champion in Paris with titles in 2002, 2013 and 2015, making up her 23 career major triumphs.
Eighth-seeded Sandgren, ranked five spots behind Johnson at 56th, advanced to his first ATP final by downing Croatia's 39-year-old Ivo Karlovic 7-6 (7/2), 7-6 (7/4).
Karlovic could become the oldest ATP finalist since Ken Rosewall won the 1977 Hong Kong title at age 43.
Rafael Nadal, who hasn't hit a ball in anger since pulling out of the Australian Open quarter-finals in January, saw Roger Federer take over top spot on February 18.
Stephens will face either French Open champion Jelena Ostapenko, the sixth seed, or American qualifier Danielle Collins in Saturday's final at Crandon Park.
Williams, 37, was made to work hard for her passage into the fourth round, fighting off three match points before eventually seeing off Kiki Bertens in a three-hour battle.
US Open champion Stephens dominated Spain's reigning Wimbledon champion Muguruza to record a 6-3, 6-4 win and advance to the quarter-finals.
The 30-year-old Briton has not played competitively since a quarter-final defeat by Sam Querrey at Wimbledon last July, and has since slipped to 29th in the world rankings.
Argentina's fifth-seeded del Potro, chasing his second ATP Masters title in as many weeks, breezed past Japan's Kei Nishikori 6-2, 6-2.
Williams, ranked eighth in the world, laboured nearly three hours to beat 29th-ranked Bertens 5-7, 6-3, 7-5.
The third-round defeat comes a week after Simona Halep was toppled in the semi-finals at Indian Wells by Japan's Naomi Osaka, who went on to win the title in the California desert.
World number two Caroline Wozniacki appeared to be headed to an easy victory after winning the first set in less than 30 minutes before the wheels fell off.
Venus Williams improved to 7-3 on the season as she clinched the victory on the second match point when the 21-year-old Russian smacked a forehand wide.
Osaka, who won her first major title in Indian Wells last weekend, was superior throughout and fully deserved her 6-3, 6-2 win in just one hour and 17 minutes.
Tennis great Martina Navratilova said she was told she was getting paid a comparable amount to men doing the same job.
South Africa’s Kevin Anderson moved up one spot from ninth following his run to the quarter-finals of the Paribas Open in Indian Wells last week.
The 27-year-old Raonic picked up just his fourth match win of the season and is seeking to capture his ninth career ATP Tour title.
Sharapova's withdrawal comes after a disappointing early exit at Indian Wells in California this week, where she lost her opening match against rising Japanese star Naomi Osaka.
Unseeded Borna Coric of Croatia beat South Africa's world No 9 and the tournament's seventh seed 2-6 6-4 7-6(3) in a match that lasted 2hrs 22min.
The South African will face unseeded Borna Coric in the quarterfinals after the Croatian beat Taylor Fritz 6-2 6-7 (6-8) 6-4.
Halep needed two hours and 23 minutes to put Martic away under taxing conditions as strong winds swirled around the main stadium court.
The 25-year-old Czech Pliskova blasted four aces and broke Anisimova's serve three times in the one hour, 32-minute match.
South Africa's Kevin Anderson will now look to extend his perfect 3-0 ATP head-to-head record against last year’s Indian Wells semifinalist, No 11 seed Pablo Carreno Busta of Spain
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