A welterweight bout has been added to the upcoming UFC 100 show in Las Vegas as top-five 170-pound contender Jon Fitch returns to action to face Brazilian Paulo Thiago. The bout was confirmed to MMAWeekly.com by sources close to the fight on Monday.

According to the sources, both fighters have agreed to the bout, but contracts for the fight have not been signed yet.

Fitch returns in July after a successful turn in his last fight, a win over Japanese fighter Akihiro Gono in January. The American Kickboxing Academy fighter currently sits at 9-1 in his UFC career with his lone loss coming by way of welterweight champion Georges St. Pierre in August 2008.

The fight against Thiago will hold special interest for Fitch as the Brazilian made quite a debut in his first UFC fight knocking out fellow AKA fight team member Josh Koscheck at UFC 95 in February.

Thiago entered the bout with an undefeated record, but relatively unknown to most in the MMA world. He made his presence known with a stunning first round knockout over Koscheck, who has been a top contender in the division for sometime now.

It is unknown at this time if the bout between Fitch and Thiago will end up on the televised or preliminary portion of the pay-per-view card.

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