Paul Childs/Reuters

Baseline Buzz: What to expect from the top stars this summer

With Wimbledon a distant memory, it's time to move on to the summer hard-court season -- a grueling swing that, for now, has many more questions than answers.

Grant Halverson/Getty Images

Karlovic beats Johnson, into Citi Open final

Ivo Karlovic's big serve carried him to a second consecutive final at age 37, earning a 6-4, 6-4 victory over fifth-seeded American Steve Johnson at the Citi Open on Saturday.

Sajjad Hussain/AFP/Getty Images
4dMatt Wilansky

Federer, Nadal both withdraw from Rogers Cup

Roger Federer and Rafael Nadal withdrew from the Rogers Cup, joining Andy Murray as top stars who will skip the first Masters Series tournament of the summer.

Etienne Laurent/EPA

Croatia rallies to stun U.S. in Davis Cup

The odds stacked against his underdog side, Croatian captain Zeljko Krajan was brimming with confidence Sunday morning before the reverse singles match in the Davis Cup quarterfinal tie against U

AP Photo/Bill Kostroun
9dPeter Bodo

How Olympic tennis impacts hard-court season

With the Olympics creating uncertainty, the upcoming hard-court season will be fascinating. Here are five key storylines to watch for the stretch of tennis that culminates with the US Open.

6dPA Sport

Ramos-Vinolas beats Verdasco for Bastad title

Albert Ramos-Vinolas won his first ATP World Tour singles title at the Swedish Open, while Slovakia's Martin Klizan clinched the German Tennis Championships in Hamburg.

Pete Christopher/The Oregonian via AP

Bryans stunned; Croatia cuts U.S. Davis Cup lead

Ivan Dodig and Marin Cilic kept Croatia alive in the Davis Cup quarterfinal match with the United States, beating twins Bob and Mike Bryan 6-2, 2-6, 6-2, 6-4 on Saturday.

Cem Ozdel/Getty Images

US Open singles champs to earn record $3.5M

This year's US Open men's and women's singles champions will each earn a record $3.5 million. The US Open has the largest purse of the four tennis majors.

Five things we learned: Murray's straightforward win (2:06)
14dLeo Spall

How Murray took down Raonic at Wimbledon

Facing a big serve and a formidable forehand, Andy Murray beat Milos Raonic in straight sets to become Wimbledon champion again. Here's how he did it.

WATCH: Murray presents the trophy on the Wimbledon balcony (0:24)
'Murray was focused throughout the championship' (2:48)