Do elites ever collapse on the ground after a race?

I saw a few go down after their races at the trials.

El Guerrouj after winning his first Olympic gold, though really he got down to pray, then kind of rolled over.

http://www.zimbio.com/pictures/DrOeaj4Y6kw/Olympics+Day+15+Athletics/7nZJzXzwI-K/Hicham+El+Guerrouj

Then somebody tossed a flag over him.

http://www.iaaf.org/mm/photo/competitions/worldchampionships/22853_w400xh600.jpg

Kelly Sotherton after the heptathlon 800m in Beijing:

http://i.dailymail.co.uk/i/pix/2012/05/26/article-2150402-134F7530000005DC-177_634x387.jpg

There's a guy on the ground behind Lagat here:

http://msnbcmedia.msn.com/j/msnbc/Components/Photo/_new/pb-080817-track-cannon.photoblog900.jpg

There's a guy on the ground in the background here:

http://img11.beijing2008.cn/20080913/Img214601046.jpg

Several guys on the ground here:

http://www.zimbio.com/pictures/RhZk7Nq82dq/Olympics+Day+14+Athletics/4IGiog8jsc7/Damjan+Sitar

There was a good picture similar to the last one with what looked like it might be the entire Beijing 1500m final on the ground, but I wasn't able to locate it.

I think sometimes it's a matter of the type of race they ran. The typical, championship, slow tactical, sit and kick race prolly won't take a lot out of an elite. But, if it's a fast race from the start, who knows?

Salazar was given last rites at the 1978 Falmouth race

Yuki Kawauchi says he is willing to die in every marathon effort and most often will collapse at each finish

many, many others

Bolt was down for the count and obviously in a lot of pain after his 200m wr.

I'm not sure if Ritz has ever finished a race and stayed on his feet