Serena Williams begins her quest for the third leg of the calendar-year Grand Slam on Monday when she faces Margarita Gasparyan of Russia in the first round of Wimbledon at the All England Club.
The last person to win all four majors in the same season, male or female, was Steffi Graf in 1988.
The top seed on the men's side, Novak Djokovic, opens against Philipp Kohlschreiber of Germany.
Others in action Monday include women's fourth seed Maria Sharapova and former No. 1 and 2002 men's champion Lleyton Hewitt of Australia. Hewitt is playing Wimbledon for the final time and has always enjoyed huge crowd support in London.
There was one withdrawal on Sunday. Eighth-seeded David Ferrer dropped out because of an elbow injury. He was replaced in the draw by Luca Vanni of Italy.
James will redo Cavs contract
LeBron James informed the Cleveland Cavaliers that he is opting out of his contract and will be an unrestricted free agent again on July 1. The move was widely expected and is considered a formality at this point, with James likely to re-sign another one-year deal with a player option that will pay him roughly $22 million next season — about $500,000 more than the contract he signed with the Cavaliers last summer.
James continuing to sign one-year deals accomplishes two goals: It allows him to maximize his earning power under a rising salary cap, and it keeps consistent pressure on the Cavs to improve the roster.
Kings give up on Richards
The Los Angeles Kings placed Mike Richards on unconditional waivers for the purpose of buying out the remaining five years of his contract, a person familiar with the decision told the Associated Press.
Richards is in the midst of a $69 million, 12-year contract, which runs out in 2020. By buying out Richards, the Kings partially alleviate the $5.75 million annual salary cap hit, though part of his salary will still count against the team's payroll through 2024-25.
Richards finished last season with a career-low five goals and 16 points in 53 games.
Around the horn
Track and field: Justin Gatlin won the men's 200 meters in a meet-record time of 19.57 seconds at the U.S. outdoor championships in Eugene, Ore. Tyson Gay set the previous meet record of 19.62 in 2007.
WNBA: Skylar Diggins scored 31 points and the host Tulsa Shock (8-1) defeated the Seattle Storm (2-7) 93-89 to tie the franchise record with their its straight victory. ... Minneapolis' Tayler Hill tied a career high with 16 points to help lead the host Washington Mystics (6-3) to an 86-71 victory over the Chicago Sky (5-4). Elena Delle Donne scored 26 points for the Sky and now has made 48 straight free throws. She's 81-for-83 for the season. ... The Los Angeles Sparks dropped to 0-7 after a 79-70 loss to the host New York Liberty (5-4).
MLS: Fanendo Adi scored twice in a 3-minute span in the second half to help the host Portland Timbers (8-6-4) beat the Seattle Sounders (9-7-2) 4-1. It was Adi's seventh multi-goal game since joining Portland in May 2014.
Olympics: Serbia earned its first-ever Olympic bid in women's basketball by beating France 76-68 in the EuroBasket championship game.