Mo Farah bids to give British fans memorable farewell
"I've had a long career and to come here year after year, it's been something special."
"I've had a long career and to come here year after year, it's been something special."
The two were meant to face off in Rome in June, but the Ethiopian Ayana dropped out with injury.
It will be the first time for Bolt to return to the Louis II Stadium after 2011.
Rudisha said his purpose in Shanghai will not be winning, but what challenge his body will face.