One of the most successful, talented and controversial past winners of "The Ultimate Fighter" reality series has decided to continue his career with the UFC, as Nate Diaz has signed a new four-fight contract with the Las Vegas-based promotion.

Diaz's manager Cesar Gracie informed MMAjunkie.com of the news earlier today.

The first fight under Diaz's new UFC contract will come against Marcus Davis at UFC 118 in August in what will be his second fight in the welterweight division.

The Ceaser Gracie product decided to make the move up to welterweight due to the toll his body has taken to cut down to make the 155-pound lightweight division. However, Diaz said he would still compete as a lightweight "every once in awhile."

Diaz recently made a successful welterweight debut, as he scored a first round TKO win over IFL veteran Rory Markham at UFC 111 in March. He previously lost three of four bouts as a lightweight against Clay Guida, Joe Stevenson and Gray Maynard.

Diaz has put together a solid 7-3 UFC record, scoring other notable Octagon wins over the likes of Junior Assuncao, Kurt Pellegrino, Josh Neer and Melvin Guillard.

As previously mentioned, Diaz opened his UFC career as a cast member of the fifth season of TUF, defeating Rob Emerson, Corey Hill and Gray Maynard to reach the season's finals. He then would go on to defeat Manny Gamburyan in his official UFC debut to become the winner of "The Ultimate Fighter" 5.

Prior to joining the UFC, Diaz fought for other notable organizations such as Strikeforce, WEC and Pancrese. He has put together an overall MMA record of 12-5 over his nearly six-year professional career, earning stoppages in all but one of his 12 wins including eight by submission.

Make sure to check back with us the day of the event for free, live, round-by-round coverage of UFC 118 right here at FiveKnuckles.com! Join expert analyst Mike Williams as he takes you through the entire fight card blow-by-blow and then keep it right here for all the post-fight news and notes you can handle!