Chicago Marathon winner Robert Cheruiyot is expected to fully recover after falling and hitting his head at the finish line, but doctors advised him to not run for one to three months.
The 28-year-old Kenyan sustained a mild concussion, with some bleeding inside his skull, Wesley Yapor, a Northwestern Memorial Hospital neurosurgeon, said at a news conference on Monday.
He added there was less blood on the surface of the brain in each of three successive CT scans. Cheruiyot also had a bruise to his scalp on the back of his head.
Another MRI was to be taken later on Monday, followed by another CT scan yesterday. After that, it is believed Cheruiyot will be released.
Cheruiyot also won this year's Boston Marathon. His agent, Federico Rosa, said that after a race Cheruiyot usually trains lightly for about a month. The next major race he planned to enter was the 2007 Boston Marathon.
"He has all the time to recover," Rosa said.
Rosa added that Cheruiyot still hopes to run in the annual St Silvester 15km race in Sao Paulo, Brazil, on New Year's Eve, unless doctors say otherwise.