Kerim Okten / EPA

Blind Brazilian runner Terezinha Guilhermina and her guide Guilherme Soares de Santana react after crossing the finish line to win the Women's 100m T11 final at the Paralympic Games in London on Wednesday night. 

Blind or partially-sighted athletes are permitted to use a guide runner in Paralympic races, but the guide is never permitted to cross the finish line before the blind runner. At the 2012 Games, guides became eligible for medals for the first time.

 Video: Team USA guns for Oscar Pistorius in 100m showdown

24 hours earlier Guilhermina's bid for 400m glory was derailed when Soares de Santana tripped on the home straight, a moment captured in a series of heartbreaking images published on PhotoBlog.

But their despair was replaced by joy as Guilhermina took the 100m gold in a world record time of 12.01 seconds, adding to the 200m title she won on Sunday.

Suzanne Plunkett / Reuters

Kerim Okten / EPA

Julian Finney / Getty Images

Julian Finney / Getty Images

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• Nightly News: Representing Afghanistan at the Paralympic Games
• 'Meet the Superhumans': Paralympians burst onto world stage
• More images from the Paralympic Games on PhotoBlog

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Julian Finney / Getty Images

Terezinha Guilhermina of Brazil runs as her guide Guilherme Soares de Santana lies on the track after he fell in the Women's 400m - T12 Final on day 6 of the London 2012 Paralympic Games at Olympic Stadium on Sept. 4, in London, England.

Julian Finney / Getty Images

Assia El Hannouni of France wins gold in the Women's 400m - T12 Final on day 6 of the London 2012 Paralympic Games at Olympic Stadium on Sept. 4, in London, England.

Christopher Lee / Getty Images

Terezinha Guilhermina of Brazil and her guide Guilherme Soares de Santana lie on the track after falling in the Women's 400m - T12 Final on day 6 of the London 2012 Paralympic Games at Olympic Stadium on Sept. 4, in London, England.

Leon Neal / AFP - Getty Images

Brazil's Terezhina Guilhermina and her guide Guilherme Soares de Santana console each other after Soares de Santana fell just ahead of the finish line of the women's 400m T12 final at the Paralympic Games at the Olympic Park in east London, England on Sept. 4.

Update, September 6th: The night after these pictures were taken Terezinha Guilhermina and Guilherme Soares de Santana returned to the track, and this time their race had a much happier ending. Find out what happened when they competed in the 100m final.

Related content:

• Video: Team USA guns for Oscar Pistorius in 100m showdown 
• Oscar Pistorius sorry for timing, not content, of angry outburst at Paralympics
• Iraq vet: 'Now it's time to win' at Paralympics
• Ex-Marine Angela Madsen on her journey from homelessness to Paralympics
• Nightly News: Representing Afghanistan at the Paralympic Games
• 'Meet the Superhumans': Paralympians burst onto world stage
• More images from the Paralympic Games on PhotoBlog

Follow @NBCNewsPictures

Sign up for the NBCNews.com Photos Newsletter

Stefan Wermuth / Reuters

China's Liu Fuliang competes in the Men's Long Jump F46 classification final at the Olympic Stadium during the London 2012 Paralympic Games on September 3, 2012.

China's Liu Fuliang took gold in the Men's Long Jump F46 classification final at the Paralympic Games with a jump of 7.15 meters on Monday.

Glyn Kirk / AFP - Getty Images

US athlete Tobi Fawehinmi takes part in the men's long jump F46 final. He finished tenth.

Glyn Kirk / AFP - Getty Images

France's Arnaud Assoumani, who took silver, competes in the men's long jump F46 final.

Stefan Wermuth / Reuters

Malaysia's Eryanto Bahtiar competes in the Men's Long Jump F46 classification final. He finished in seventh place.

Related content:

• Oscar Pistorius sorry for timing, not content, of angry outburst at Paralympics
• Iraq vet: 'Now it's time to win' at Paralympics
• Ex-Marine Angela Madsen on her journey from homelessness to Paralympics
• Nightly News: Representing Afghanistan at the Paralympic Games
• 'Meet the Superhumans': Paralympians burst onto world stage
• More images from the Paralympic Games on PhotoBlog

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Sign up for the NBCNews.com Photos Newsletter

Harry How / Getty Images

Usain Bolt of Jamaica grabs a camera from a photographer as he celebrates winning gold in the men's 200m final on Day 13 of the London 2012 Olympic Games at Olympic Stadium on Aug. 9, 2012 in London, England.

Stefano Rellandini / Reuters

Jamaica's Usain Bolt takes pictures with a photographer's camera as he celebrates winning the men's 200m final.

It appears that Usain Bolt has finally grown tired of being the star in front of thousands of cameras. Thursday night, after he won gold in the men's 200 meter final, he grabbed a camera and started taking pictures. The camera belonged to Jimmy Wixtröm, a photographer at Aftonbladet, Scandinavia's largest newspaper, according to PetaPixel.

Harry How / Getty Images

Usain Bolt of Jamaica takes photographs with a photographers' cameras as he celebrates winning gold in the men's 200m final next to Yohan Blake of Jamaica.

Then again, it looks like he's enjoying the attention as much as ever. Check out PetaPixel's post to see some of the pictures Bolt took.

John MacDougall / AFP - Getty Images

Jamaica's Usain Bolt holds a photographer's camera as he celebrates victory in the men's 200m final.

• Slideshow: Olympic Emotional Moments
• View more photos of Usain Bolt on PhotoBlog
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Max Rossi / Reuters

Officials stand next to a remote controlled Mini Cooper which returns the hammer to athletes during the Group A men's hammer throw qualification at the London 2012 Olympic Games, Aug. 3.

Michael Steele / Getty Images

A remote control Mini Cooper is used to return the hammer in the men's hammer throw on Day 7 of the London 2012 Olympic Games, Aug. 3.

Remote controlled Mini Coopers have been called in to help track and field athletes retrieve equipment at the London 2012 Olympic Games.

NBC New York reports:

To keep the action moving during a packed schedule of throwing sports—javelin, discus, hammer and shot put—miniature Mini Coopers have been assigned pick-up duty. The auto maker, which is an official partner of team Great Britain and the British Paralympics, unveiled three radio-controlled "Mini MINI" electric hatchbacks to fetch the equiptment athletes hurl onto the field, autoblog.com reported. Continue reading the full story.

Jewel Samad / AFP - Getty Images

Remote control cars bring back shots during the women's heptathlon shot put.

Slideshow: Olympic Emotional Moments

Click for more from the 2012 summer games in London.

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USA Track & Field via AP

This Saturday, June 23, 2012, photo provided by USA Track & Field shows the third-place finish of the women's 100-meter final from a photo-finish camera, shot at 3,000-frames-per-second, during the U.S. Olympic Track and Field Trials in Eugene, Ore. Allyson Felix and Jeneba Tarmoh, in foreground, finished in a dead heat for the last U.S. spot in the 100 to the London Games, each leaning across the finish line in 11.068 seconds. The first torso to cross the finish line is what establishes a winner.

Mike Blake / Reuters

Allyson Felix puts her arm around Jeneba Tarmoh after the two runners tied for third place in the women's 100m race at the U.S. Olympic athletics trials in Eugene, Oregon, June 23.

 NBC Olympics reports: Nearly 24 hours of confusion over how the dead heat between Allyson Felixand Janeba Tarmoh for the third and final spot on the Olympic team in the women’s 100m will come down to either a coin flip or a run-off.

According to these new procedures, which will be applied to all instances of breaking a tie for the final slot in a running event in which a national team or Olympic team slot is at stake, the tie will be broken by the following protocol:

The athletes involved will be given the option to determine the tie-breaker via coin toss or by run-off.

If the athletes disagree on the tie-breaker, the tie will be broken by a run-off.

If both athletes refuse to declare a preference between the coin toss or the run-off, the tie will be broken by a coin toss.

• Full story.
• Full coverage from NBC Olympics
• Coach wants Felix-Tarmoh tiebreaker delayed

Mike Blake / Reuters

U.S. decathlete Ashton Eaton celebrates as he clears 5.30 meters in the decathlon pole vault at the U.S. Olympic Athletics Trials in Eugene, Ore., June 23.

In the decathlon, Ashton Eaton was ahead of a world-record pace for two events. His shot put throw of 46 feet, 7 3/4 inches slowed him down, but he still led two-time world champion Trey Hardee by 205 points with six events to go.

Eaton, an Oregon native, looked very much at home in the steady rain that swamped Hayward Field for the first of this 10-day event, during which up to 120 spots on the U.S. Olympic team will be awarded.

Read the full story from nbcolympics.com

Related story: Bryan Clay fails to make team

Matt Slocum / AP

Ashton Eaton and Curtis Beach react after the 1500m during the decathlon competition at the U.S. Olympic Track and Field Trials, June 23, in Eugene, Ore. Eaton finished the decathlon with a new world record.

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