I hope Chelimo makes it a fast race in the final. If there is a way to beat Farah it has to be fast. Take it out at 13 flat pace even so I am not sure if that will work. But going out at 1350 pace will concede defeat and or put too many possibilities to how it ends up by not eliminating the pretenders
Thing is Farah is pretty smart, at least compared to his opponents. He will not misjudge a pace barring some anomaly.
The difference separating Chelimo and Farah is small enough that if Chelimo does something unusual, he will pay for it and fade. If he runs a normal race it's a gamble considering Farah's near unbeatable kick.
If Farah loses, it's a fluke. He's still the best 5K/10K guy in the world right now regardless.