He also had held the world record for 15K.
Olympian undergoing knee surgery this Friday.
The marathon world-record holder followed up his DNF in New York with a DNS at Tokyo this past weekend.
Marathon world-record holder wants to compete in 2012 Olympics.
The world-record marathoner is definitely reconsidering, according to manager Jos Hermens.
The world-record holder in the marathon recently Tweeted he needs more time to think things over.
Sammy Wanjiru had hoped to race his top rival.
The New York Road Runners CEO was shocked when she heard of the great marathoner's retirement.
One thing is for certain: there will never be another Gebrselassie.
The marathon world-record holder makes shocking announcement after dropping out of the ING NYC Marathon.