11:24 AM ET The new year is just a week old, but some of the main storylines for 2019 are already fraying, making the question of what 2019 really holds in store that much juicer. Here are some of the trends detected after the first week of play: The Big Four Reunion might be a

9:52 AM ET Associated Press SYDNEY — Former Wimbledon champion Garbine Muguruza earned a 6-3, 6-4 win over Carla Suarez Navarro on Monday after a day interrupted by rain at the Sydney International. Samantha Stosur, the 2011 US Open champion, had a rare win on Australian soil when she rallied to beat Dominika Cibulkova 3-6,

6:31 AM ET Denis Shapovalov lost his first match of the 2019 tennis season as Joao Sousa came from a set down to advance to the second round of the ASB Classic in Auckland. The Canadian No. 7 seed, who enjoyed a breakthrough year in 2018, looked comfortable as he broke Sousa twice to win

9:56 PM ET Associated Press SYDNEY — Sydney is set to host the finals of the inaugural ATP Cup men’s team competition next January in an overhaul of the Australian swing for men’s tennis ahead of the season-opening Grand Slam tournament. Kei Nishikori has finally snapped a title drought that stretched 52 tournaments, nine finals

7:26 AM ET Kei Nishikori has finally snapped a title drought that stretched 52 tournaments, nine finals defeats and nearly three years. The Japanese world No.9 got the monkey off his back in a 6-4 3-6 6-2 defeat of impressive 22-year-old Daniil Medvedev in Sunday night’s Brisbane International final. Kei Nishikori with the Brisbane International

5:14 AM ET Karolina Pliskova has won her second Brisbane International, overrunning Lesia Tsurenko 4-6 7-5 6-2 after being just two points from defeat. A courtside pump-up from Australian coach Rennae Stubbs revived Pliskova, who won 13 straight points as Tsurenko went from serving for the championship to trailing in the decider in the blink

9:34 PM ET Associated Press SYDNEY — No. 1-ranked Simona Halep returns to competitive tennis this week at the Sydney International unsure if her back injury has fully healed. It will be the first time Halep has played since the French Open champion ended her season in October due to a herniated disk in her

1:42 PM ET Associated Press DOHA, Qatar — Roberto Bautista Agut didn’t waste his win over Novak Djokovic as he won the Qatar Open by beating Tomas Berdych 6-4, 3-6, 6-3 in the final on Saturday. Spain’s Roberto Bautista Agut reacts after winning against Czech Republic’s Tomas Berdych during the ATP Qatar Open final. Photo by

9:25 AM ET Associated Press PERTH, Australia — Roger Federer won the Hopman Cup for a record third time after defending champion Switzerland beat Germany 2-1 on Saturday. Federer and Belinda Bencic beat Alexander Zverev and Angelique Kerber 4-0, 1-4, 4-3 (4) in the Fast4 format with Germany wasting a championship point in the mixed

1:07 AM ET Naomi Osaka has lamented having a poor attitude her upset semifinal loss to world No.27 Lesia Tsurenko at the Brisbane International. The US Open champion was dominated by the unseeded Ukranian, making 26 unforced errors to lose 6-2 6-4 in 66 minutes at Pat Rafter Arena on Saturday. Lesia Tsurenko during the