Who is the best UFC fighter?

Brock Lesner is the best fighter in the UFC, holding UFC heavyweight title

for light heavyweight - Lyoto Machida (undefeated) SHOGUN RUA!!!!

Middleweight - Anderson Silva

Welterweight - George St-Pierre

Lightweight - BJ Penn

The best UFC fighter, according to President Dana White is Anderson "the spider" Silva, who is unbeaten in the UFC, and the current Middleweight champion.

He holds the record for the most consecutive wins in the UFC (9 in a row, which is still going) and has been called by UFC president Dana White the "Pound for pound best fighter in the world."

While things such as this are open to individual interpretation, Anderson Silva currently has the most impressive UFC record, is recognised by the UFC as the best fighter in the world, is undefeated in the UFC and is the current UFC middleweight champion.

Other contenders would be Georges St Pierre and BJ Penn, the Welterweight and Lightweight champions respectively, though both have suffered losses in the UFC.

Brock Lesnar is the best UFC fighter its proven by fact

I disagree with you on that yes those are the current champions, but BJ Penn just loss the belt to Frankie Edgar who is very good. If you are asking who is the best UFC fighter you would have to go with Lyoto Machida followed by Anderson Silva, Silva is much to cocky and does not finish fights. Silva either cant finish the fight or chooses not to like a cocky arrogant prick so I am giving it to the Dragon Lyoto Machida

brock lesnar is the best