What We Learned from UFC 199: No one is safe. No one

— -- One day after the passing of Muhammad Ali, the mixed martial arts world paid homage to the global icon in the form of a spectacular night of fights at The Forum in Inglewood, California -- the same venue where Ali defeated Ken Norton in a crucial rematch in 1973.

Michael Bisping delivered one of the most improbable wins in UFC title fight history. Dominick Cruz, a self-proclaimed student of Ali, turned in one of the most dominant performances of his career against a longtime rival in Urijah Faber. And Dan Henderson, at age 45 and on the last fight of his UFC contract, produced a knockout for the ages against Hector Lombard.

It was one of the best nights in recent memory, which is saying something, considering the run of historical moments the sport has witnessed lately. Here's what we learned from it all.

No one is safe. No one.