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Emma Coburn and the controlled chaos of the water jump

Instead of barriers that tip over, the steeplechase contains four immovable barriers and a 30-inch wall that is set in front of a 10-foot-long pool of water. Sound crazy? U.S. Olympic hopeful Emma Coburn shows how it's done.

Old and new names star at Day 5 of US swim trials (2:16)
9hBonnie D. Ford

Men's 4x100 free relay an eclectic group

Nathan Adrian, Caeleb Dressel, Ryan Held and Anthony Ervin will represent the U.S. in the Olympics, facing world competition that is faster.

AP Photo/David J. Phillip

Stepanova gets IAAF's approval to compete in Rio

Track and field's governing body has approved Russian whistleblower Yulia Stepanova's bid to compete as a neutral athlete in the upcoming European championships and the Olympics at Rio de Janeiro

Christian Petersen/Getty Images

Sprinter Jeter to miss trials with quadriceps injury

Three-time Olympic medalist Carmelita Jeter announced Thursday that she is withdrawing from the U.S. Olympic track and field trials because of an injury to her left quadriceps.

AP Photo/Orlin Wagner

Prenot wins 200 breast, sets new U.S. record

Josh Prenot secured his first trip to the Olympic Games by winning the 200 breaststroke finals with a new American record on Thursday at the U.S. trials in Omaha.

Maxx Wolfson/Getty Images
13hBonnie D. Ford

USOC's Blackmun: Global anti-doping 'broken'

USOC CEO Scott Blackmun said he hopes for strong measures from international sports federations if WADA's inquiry shows Russia's doping problems extend beyond track and field.

AP Photo/David J. Phillip

Russian sculls team banned from Rio for doping

The Russian men's quadruple sculls team has been disqualified from the Rio de Janeiro Olympics for a doping violation, and will be replaced at the games by New Zealand, world rowing's ruling body

AP Photo/Silvia Izquierdo

Amid cuts, Rio police seeking aid before Games

Just weeks ahead of the Olympic Games, Rio civil police officers have staged strikes in response to budget cuts, casting doubt on overall security for the sporting event.

Bob Edme/AP Photo

Pace withdraws from Rio because of Zika

Golfer Lee-Anne Pace of South Africa has withdrawn her name from consideration for her nation's Olympic team out of concern about the Zika virus.

Ian MacNicol/Getty images

Kookaburras name 16-man Olympic squad

Australian field hockey stalwarts Jamie Dwyer and Mark Knowles have been selected for their fourth Olympics, giving No. 1-ranked Australia an edge in experience in their bid for a gold medal.

3dDarren Rovell

U.S. track and field given quick boost with apparel

With an eye on speed, Nike has unveiled three new innovations to its apparel that the brand hopes will bolster times and distances for U.S. athletes during the Rio de Janeiro Games in August.

Frederic T Stevens/Getty Images

WADA suspends Kazakhstan anti-doping lab

Four days after shutting down work at the Olympic drug test laboratory in Rio, the World Anti-Doping Agency has suspended another lab, this time in Kazakhstan.

Xinhua/Li Ming via Getty Images

Rio governor: Olympics could be 'big failure'

Rio de Janeiro's acting governor said that the Olympics could be a "big failure" because of budget shortfalls that threaten to compromise security and mobility during the Games.

Rio Mayor opens Olympic Velodrome (1:04)
Streeter Lecka/Getty Images

Boudia, Cook earn Olympic diving spots at trials

David Boudia will defend his Olympic gold medal in Rio de Janeiro after securing a spot in the 10-meter platform event on Sunday at the U.S. Olympic diving trials.

Simone Manuel's challenging rise in swimming (1:08)
AP Photo/Pavel Golovkin

67 Russians apply for Rio Olympics as individuals

Up to 67 Russians willing to show they took reliable drug-testing outside their home country have submitted individual applications to take part at the Rio de Janeiro Olympics.