Haile Gebrselassie, the former world-record holder, failed to qualify for the 10,000 meters event at the London Games, finishing seventh at the FBK Games in Hengelo, the Netherlands.

What happened?

Haile Gebrselassie pulled out of the New York City Marathon due to a knee injury and announced his retirement.

Haile Gebrselassie later said he was having second thoughts about his retirement.

Why it matters for Haile Gebrselassie

The two-hour marathon may be the modern-day equivalent of the four-minute mile, and Haile Gebrselassie's record of 2:03:38 was topped by Patrick Makau with a time of 2:03:38.

Haile Gebrselassie has run in a manner intended to achieve records and has struggled on courses like New York's.

What comes next?

Haile Gebrselassie fell and injured both knees while training in the rugged countryside of Ethiopia, sidelining the long-distance running great for up to six weeks, as reported by The Associated Press.

Ryan Hall became the first American-born runner to win the Philadelphia Distance Run since 1986, and world-record holder Haile Gebrselassie of Ethiopia won the Berlin Marathon, with a time of 2 hours 7 minutes 37 seconds, as reported by The Associated Press.

Haile Gebrselassie's performance at the Tokyo Marathon was notable, where Michael Kipyego of Kenya surged ahead of him with two and a half miles left to win.

The Ethiopian runner Haile Gebrselassie, who said he was retiring after pulling out midway through Sunday’s New York City Marathon with a knee injury, had a remarkable career, with multiple records and wins.

Haile Gebrselassie's announced retirement after the New York City Marathon was a reaction to a disappointing race, he said in a Twitter message, as reported by Jeré Longman.