Top athletes skipping out on Rio Olympics

WASHINGTON, DC - JULY 21: Alexander Zverev of Germany celebrates after defeating Malek Jaziri of Tunisia 6-2, 5-7, 6-2 during day 4 of the Citi Open at Rock Creek Tennis Center on July 21, 2016 in Washington, DC. (Photo by Matt Hazlett/Getty Images)

FILE - In this Aug. 4, 2012, file photo, Mike Bryan, right, and Bob Bryan, left, of the United States, kiss their gold medals after the medal ceremony of the men’s doubles final match at the 2012 Summer Olympics at the All England Lawn Tennis Club at Wimbledon, London. There is nothing Mike Bryan cherishes more than the gold medal he and twin brother Bob won at the 2012 London Olympics. Which is why he would never miss a chance for a medal, something six of the top 25 men in the ATP singles rankings will do by sitting out the Rio de Janeiro Games. (AP Photo/Elise Amendola, File)

Belinda Bencic of Switzerland returns to Tsvetana Pironkova of Bulgaria during their women’s singles match on day three of the Wimbledon Tennis Championships in London, Wednesday, June 29, 2016. (AP Photo/Tim Ireland)

Britain Tennis - Wimbledon - All England Lawn Tennis & Croquet Club, Wimbledon, England - 8/7/16 Switzerland’s Roger Federer reacts during his match against Canada’s Milos Raonic REUTERS/Clive Brunskill/Pool

FILE - In this Tuesday, July 5, 2016 file photo, Simona Halep of Romania returns to Angelique Kerber of Germany during their women’s singles match on day eight of the Wimbledon Tennis Championships in London. wo top-10 tennis players have withdrawn from the Rio Olympics, citing concerns about the Zika virus.Fifth-ranked Simona Halep on the women’s side and No. 7 Milos Raonic for the men announced their decisions Friday, July 15, 2016 after their names were listed on the International Tennis Federation’s roster for next month’s Summer Games.(AP Photo/Ben Curtis, File)

FILE - In this Sunday, July 10, 2016 file photo, Milos Raonic of Canada plays a return to Andy Murray of Britain during the men’s singles final on the fourteenth day of the Wimbledon Tennis Championships in London. Two top-10 tennis players have withdrawn from the Rio Olympics, citing concerns about the Zika virus.Fifth-ranked Simona Halep on the women’s side and No. 7 Milos Raonic for the men announced their decisions Friday, July 15, 2016 after their names were listed on the International Tennis Federation’s roster for next month’s Summer Games.(AP Photo/Ben Curtis, File)

TROON, SCOTLAND - JULY 11: Jordan Spieth of the United States tees off on the 7th hole during a practice round ahead of the 145th Open Championship at Royal Troon on July 11, 2016 in Troon, Scotland. (Photo by Mike Ehrmann/Getty Images)

FILE - In this Aug. 11, 2015, file photo, Russell Westbrook looks to pass the ball during the U.S. men’s basketball team’s minicamp in Las Vegas. Westbrook says he won’t play in the Olympics, leaving the U.S. basketball team without another of its best players. The Oklahoma City point guard said Friday, June 10, 2016, that he decided not to play after talking with his family. He didn’t give a reason for pulling out in his statement released through the Thunder. ((AP Photo/David Becker, File)

Dustin Johnson chips on the ninth hole during the first round of the Bridgestone Invitational golf tournament at Firestone Country Club, Thursday, June 30, 2016, in Akron, Ohio. (AP Photo/Tony Dejak)

FILE - This is a Monday, March 7, 2016 file photo showing tennis star Maria Sharapova speakings about her failed drug test at the Australia Open during a news conference in Los Angeles. Sharapova says she’s headed to Harvard Business School while she serves a two-year doping ban. Representatives for Harvard and Sharapova didn’t immediately comment Monday, June 27, 2016. (AP Photo/Damian Dovarganes, File)

CLEVELAND, OH - JUNE 22: LeBron James #23 of the Cleveland Cavaliers celebrates during the Cleveland Cavaliers 2016 championship victory parade and rally on June 22, 2016 in Cleveland, Ohio. (Photo by Jason Miller/Getty Images) *** BESTPIX ***

ILE - In this June 3, 2016, file photo, Jason Day, of Australia, tees off on the 14th hole during the second round of the Memorial golf tournament in Dublin, Ohio. The British Open is scheduled for July 1417, 2016, at Royal Troon Golf Club in Ayrshire, Scotland. (AP Photo/Darron Cummings, File)

FILE - In this Saturday, June 18, 2016 file photo, Rory McIlroy, of Northern Ireland, watches his tee shot on the ninth hole during the rain delayed second round of the U.S. Open golf championship at Oakmont Country Club, in Oakmont, Pa. McIlroy says he will not be competing in the golf tournament at the Rio de Janiero Olympics because of concerns over the Zika virus, it was reported Wednesday, June 22, 2016. (AP Photo/Charlie Riedel, File)

Kenya’s Dennis Kimetto poses for photographers ahead of the London marathon, near Tower Bridge in London, Wednesday, April 20, 2016. The London marathon will take place on Sunday. (AP Photo/Frank Augstein)

OAKLAND, CA - APRIL 27: James Harden #13 of the Houston Rockets sits on the bench during the final minutes of their loss to the Golden State Warriors in Game Five of the Western Conference Quarterfinals during the 2016 NBA Playoffs at ORACLE Arena on April 27, 2016 in Oakland, California. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, user is consenting to the terms and conditions of Getty Images License Agreement. (Photo by Ezra Shaw/Getty Images)

LONDON, ENGLAND - JULY 03: Feliciano Lopez of Spain looks on during the Men’s Singles third round match against Nick Kyrgios of Australia on Middle Sunday of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 3, 2016 in London, England. (Photo by Clive Brunskill/Getty Images)

LONDON, ENGLAND - JULY 04: Nick Kyrgios of Australia reacts during the Men’s Singles fourth round match against Andy Murray of Great Britain on day seven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 4, 2016 in London, England. (Photo by Shaun Botterill/Getty Images)

CHARLOTTE, NC - JANUARY 18: Gordon Hayward #20 of the Utah Jazz watches on during their game against the Charlotte Hornets at Time Warner Cable Arena on January 18, 2016 in Charlotte, North Carolina. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Streeter Lecka/Getty Images)

Shane Lowry, of the Republic of Ireland, reacts after missing a putt on the seventh hole during the final round of the U.S. Open golf championship at Oakmont Country Club on Sunday, June 19, 2016, in Oakmont, Pa. (AP Photo/Charlie Riedel)

OAKLAND, CA - APRIL 27: Blake Griffin #32 of the Los Angeles Clippers talks with the press after their loss against the Golden State Warriors in Game Four of the Western Conference Quarterfinals during the 2014 NBA Playoffs at Oracle Arena on April 27, 2014 in Oakland, California. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this Photograph, user is consenting to the terms and conditions of Getty Images License Agreement. Mandatory Copyright Notice: Copyright 2014 NBAE (Photo by Rocky Widner/NBAE via Getty Images)

IRVING, TX - MAY 19: Marc Leishman of Australia hits his second shot on the 16th hole during Round One of the AT&T Byron Nelson on May 19, 2016 in Irving, Texas. (Photo by Scott Halleran/Getty Images)

FILE- In this file photo dated Saturday, July 18, 2015, Tejay van Garderen of the U.S. climbs during the fourteenth stage of the Tour de France cycling race over 178.5 kilometers (110.9 miles) with start in Rodez and finish in Mende, France, Saturday, July 18, 2015. Tejay van Garderen is a top contenders for overall victory in the upcoming 103rd Tour de France, which starts Saturday July 2, 2016, at Mont-Saint-Michel, France. (AP Photo/Laurent Cipriani, FILE)

Spain’s Marc Gasol slams dunk against France during their Basketball World Cup quarter-final game in Madrid September 10, 2014. REUTERS/Juan Medina (SPAIN - Tags: SPORT BASKETBALL)

OAKLAND, CA - MARCH 14: Anthony Davis #23 of the New Orleans Pelicans dunks the ball over Draymond Green #23 of the Golden State Warriors at ORACLE Arena on March 14, 2016 in Oakland, California. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Ezra Shaw/Getty Images)

FORT WORTH, TX - MAY 26: Adam Scott of Australia looks on from the second green during the First Round of the DEAN & DELUCA Invitational at Colonial Country Club on May 26, 2016 in Fort Worth, Texas. (Photo by Ron Jenkins/Getty Images)

DUBLIN, OH - JUNE 03: Charl Schwartzel of South Africa hits his tee shot on the par 4 17th hole during the second round of The Memorial Tournament at Muirfield Village Golf Club on June 3, 2016 in Dublin, Ohio. (Photo by Andy Lyons/Getty Images)

Louis Oosthuizen, of South Africa, watches his shot onto the 14th green during semifinal round play against Rafa Cabrera Bello of Spain at the Dell Match Play Championship golf tournament at Austin Country Club Sunday, March 27, 2016, in Austin, Texas. (AP Photo/Charlie Riedel)

CHARLOTTE, NC - MARCH 21: LaMarcus Aldridge #12 of the San Antonio Spurs reacts after a call during their game against the Charlotte Hornets at Time Warner Cable Arena on March 21, 2016 in Charlotte, North Carolina.NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Streeter Lecka/Getty Images)

BETHESDA, MD - JUNE 26: Vijay Singh of Fiji watches his shot from the 15th tee during the final round of the Quicken Loans National at Congressional Country Club on June 26, 2016 in Bethesda, Maryland. (Photo by Rob Carr/Getty Images)

Golf - Dubai Duty Free Irish Open - The K Club, County Kildare, Ireland - 19/5/16 Northern Ireland’s Graeme McDowell reacts to a drive at the 11th hole during the first round Action Images via Reuters / Paul Childs Livepic EDITORIAL USE ONLY.

Spain’s Alberto Contador strains as he rides at the back of the pack during the ninth stage of the Tour de France cycling race over 184.5 kilometers (114.3 miles) with start in Vielha Val d'Aran, Spain, and finish in Andorra Arcalis, Andorra, Sunday, July 10, 2016. Contador abandoned halfway through the stage with a fever. (AP Photo/Christophe Ena)