Zverev seeks his ninth career ATP title and third of the year after Munich and Madrid. He also was runner-up at Miami and Rome.
Murray also withdrew from next week's ATP Toronto Masters, citing the drain from three gruelling three-set victories over more than eight hours on the US capital hardcourts.
The injury raises doubts about whether Kyrgios will be ready for the US Open, which starts August 27 in New York.
Johanna Konta took just 51 minutes to crush Williams, 6-1, 6-0 in their opening round match.
Stephens fired her sixth ace on her first match-point chance to advance after one hour and 53 minutes.
Daniel Poncedeleon hurled seven-no hit innings in his Major League Baseball debut on Monday, 15 months after undergoing emergency brain surgery.
Mickelson's bogey putt at Shinnecock Hills' par-four 13th skated past the cup and was heading down a slope when he trotted after it and batted it back toward the hole with his putter.
Johnson was the only player under par through the first two punishing rounds, taking a four-stroke lead into the third at four-under par.
Johnson was more than equal to all of it, his two-round total of four-under 136 putting him four ahead of Americans Charley Hoffman and Scott Piercy.
Green will replace Tom Mesereau, who has represented numerous celebrities and was Cosby's lawyer for his second trial which resulted in his conviction on three counts of sexual assault on April 26.
The former world number one watched last year's US Open at Erin Hills from afar, still in the early stages of his recovery from spinal fusion surgery and unsure if he would resume his golf career.
Julian Green gave the US, who failed to make it to Russia, the lead on the stroke of half-time but teenage starlet Kylian Mbappe equalised for the hosts.
The US Golf Association released first- and second-round tee times for the 118th US Open on Thursday, and once again their featured groups promise plenty of fireworks.
More time spent on each screen activity was associated with more insomnia symptoms and shorter sleep duration, which was further associated with greater depressive symptoms.
MLS Commissioner Don Garber said the team who currently play in the second tier United Soccer League would join the league from 2019.
The culture ministry confirmed that no decision had been made after a meeting with Paris city officials and the artist's representatives.
Nassar pleaded guilty to sexually assaulting women and girls over a two-decade period under the guise of medical treatment.
The Michigan University has agreed on a 500 million settlement with victims of sexual abuse of former US gymnastics doctor Larry Nassar.
China had a record US goods trade surplus of US$375 billion in 2017.
McCain has been fighting an aggressive form of brain cancer for more than a year.
Former star athletes who were sexually abused by one-time sports doctor Larry Nassar condemned an "epidemic" of pedophilia in the United States, calling for a "nationwide sweep" and greater accountability.
South Korea said it would oppose a withdrawal of US troops from the area.
Toronto Raptors star DeMar DeRozan and Cleveland Cavaliers ace Kevin Love are part of a new public service campaign launched by the NBA aimed at encouraging mental wellness for athletes.
US President Donald Trump tweeted support for the North American FIFA World Cup bid Thursday, and hinted nations who oppose it could face political repercussions.