Reuters Sports News Summary

Following is a summary of current sports news briefs. Top seed Halep marches on with clinical win over Venus

Top seed Simona Halep had the odds stacked against her ahead of the Australian Open but the Romanian proved her title credentials with a breezy 6-2 6-3 third round win over multiple Grand Slam winner Venus Willliams on Saturday. The reward for the 27-year-old French Open champion is probably the toughest challenge in the women's draw at Melbourne Park, a fourth round date with the younger Williams sister, Serena. Lowry endures Sterne test to win Abu Dhabi Championship

Shane Lowry claimed his first European Tour title since 2015 by winning the Abu Dhabi HSBC Championship on Saturday, finishing one shot ahead of South Africa's Richard Sterne in a thrilling final round battle. Overnight leader Lowry was pushed to the limit by Sterne but sank a crucial birdie on the final hole to close with a round of 71 that took him to 18-under par 270 for the tournament. Not so fast, Roger. Federer blocked by Australian Open security

Rules are rules in Australia, even if you are a 20-times Grand Slam champion and one of the most recognizable people on the planet. Roger Federer found that out this week when he was blocked access to a locker room at the Australian Open by a security guard who took his job very seriously. Zverev cruises past Bolt to reach fourth round

Germany's Alexander Zverev brandished his credentials as an Australian Open title contender by dispatching local wildcard Alex Bolt 6-3 6-3 6-2 in the third round on Saturday. The fourth seed was tested early on his serve, which was initially off-target, but was able to maintain control of the contest with a strong returning display. Reinstated RUSADA asks WADA to confirm compliance status

Russia's anti-doping agency RUSADA has asked the World Anti-Doping Agency (WADA) to confirm its compliance at a meeting next week after Moscow missed a deadline to hand over laboratory data. Last year WADA voted, subject to certain conditions, to lift the ban on RUSADA which was suspended in 2015 following allegations of widespread state-sponsored doping. Tsitsipas leads 'Next Gen' charge against Federer

Blessed with great athleticism and impeccable technique, Greek youngster Stefanos Tsitsipas will represent the new generation in their challenge to usurp the old guard when he faces Roger Federer at Melbourne Park on Sunday. Next Gen Finals champion Tsitsipas enjoyed a breakthrough 2018 campaign and has surged to a career high ranking of 15. Last Australian men's player slumps out of home Grand Slam

The last of Australia's men's singles players was dumped out of the country's home Grand Slam in the early hours of Sunday morning in a tournament that has unearthed new local talent and exposed the deep divisions tearing through the ranks. Australia's Alexei Popyrin was the last man standing, losing 7-6(3) 6-3 6-7(10) 4-6 6-3 to France's Lucas Pouille in their third round match. Agitated Djokovic regains calm to see off Shapovalov challenge

Top seed Novak Djokovic regained his composure after a third-set meltdown to stave off the challenge of Canadian teenager Denis Shapovalov and reach the fourth round of the Australian Open with a 6-3 6-4 4-6 6-0 victory on Saturday. The win guaranteed the Serb will remain number one in the world when the new rankings are released on Jan. 28 and set up a clash against another young gun in Russian Daniil Medvedev for a place in the quarter-finals. Lack of guidance and vision hurting tennis says McEnroe

John McEnroe believes tennis is suffering from a lack of "guidance and vision" and says it is time the various organizations in charge began to work in harmony. Like many fans and players the American, an analyst for Eurosport at the Australian Open, has been left bemused by the four Grand Slams all adopting different ways to finish a match. Serena consoles Ukrainian teen after sailing into last 16

Serena Williams powered into the fourth round of the Australian Open on Saturday with a 6-2 6-1 demolition of Dayana Yastremska then consoled the Ukrainian teenager after leaving her in tears. The 37-year-old Williams, chasing a record-extending eighth Melbourne title in the professional era, barely broke sweat on a sunny afternoon at Rod Laver Arena as she racked up 20 winners and beat the 57th-ranked 18-year-old in a breezy 67 minutes.