Fighters will travel the world over to find competition worthy of their skills, the UFC has fighters from all over the world to match their talent up against, but some fighters are just born lucky in this scenario.

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Some fighters are born under the same roof as other world-class fighters. Siblings are bound to fight at some point growing up, but these parents may have never expected these siblings to take that talent to the top level of MMA. Most would assume that the odds of that happened are slim to none, but sibling fighters are more common than most fans would think.

9 Nick Diaz & Nate Diaz

Two brothers from Stockton California have hit every place in the world of mixed martial arts from Strikeforce and Pride, to the UFC and the Ultimate Fighter. They have fought some of the greats like GSP, Anderson Silva, and Conor McGregor.

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At the time of writing this article, it is uncertain whether we will see either of these fighters in the Octagon again. Nick's career as it stands is 26-10-2 and Nate's is 20-13. Nate may fight Conor in a potential trilogy fight shortly.

8 Antônio Rodrigo Nogueira & Antônio Rogério Nogueira

Antônio Rodrigo Nogueira and Antônio Rogério Nogueira, are two legends in the sport, Big Nog (Rodrigo) was the Pride FC Inaugural Heavyweight Champion in 2001, and his brother Rogério known as Little Nog would go on to be considered one of the best light heavyweights in the UFC.

The brothers would fight legends like, Frank Mir, Tito Ortiz, and Fedor Emelianenko, proving themselves as world-class martial artists. They both fought for the legendary Brazilian Top Team camp.

7 Dan Miller & Jim Miller

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Jim Miller is a well-known Iron Man of the sport, he has fought for the UFC for 14 years so far and at the moment is continuing to fight. He's suggested that since he fought in UFC 100 and UFC 200, he would like to make it to UFC 300.

Some may not remember that Jim's older brother Dan also had a UFC career, fighting for the promotion 13 times earning a record of 6-7 throughout his career with the promotion.

6 Chris Daukaus & Kyle Daukaus

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The brothers from Philly are up-and-coming fighters Chris, a Heavyweight and Kyle, a middleweight both garnering strong praise from fighters and media alike. Chris is a budding heavyweight struggling to make his mark among the top-tier fighters in the division, losing his last two bouts.

Kyle is a strong middleweight who is 2-2-1 in the promotion so far. Both are expected to continue to rise in the ranks of their respective division and make names for themselves as UFC fighters in the years to come.

5 Fedor Emelianenko & Aleksander Emelianenko

If you consider yourself a fan of MMA you know who Fedor Emelianenko is. The Russian superstar rose to prominence outside the UFC fighting mainly for Pride, Strikeforce and Bellator during the years between 200 -and 2010. He went 26-0-1 and was considered the greatest of all time.

His brother Aleksander also competed in MMA and had a strong showing in pride in 2008 attempted to fight in the US for Affliction MMA, but he was denied medical clearance to fight in the States, so he continues to fight locally in Russia.

4 Valentina Shevchenko & Antonina Shevchenko

Valentina "Bullet" Schevchenko is one of the most ruthless women in the sport, dominating the flyweight title for the past 4 years defeating some of the most dangerous women in the division with ease.

Antonina, her older sister also competes in the flyweight division but is far less ruthless than her sister. Going 3-4 in her current UFC stint, she is scheduled to fight Courtney Casey in her next fight.

3 Frank Shamrock & Ken Shamrock

Adopted brothers Frank and Ken Shamrock are pioneers in the sport of MMA. They defined the wrestling-heavy approach for many fighters to come after them. Both fighters ended up earning a UFC Championship belt as well.

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Frank was the inaugural Light Heavyweight champ of the UFC and Ken won the UFC Superfight Championship, which was the belt given out before weight classes were introduced to the UFC.

2 Anthony Pettis & Sergio Pettis

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Everyone knows Showtime Pettis, a former UFC Lightweight Champion and the first fighter to get put on the cover of a Wheaties box, but his younger brother Sergio also has a distinguished career of his own.

Sergio is, at the time of writing this article, the Bantamweight champion of Bellator. He also lived up to the family name by winning his previous bout in true showtime fashion via spinning back fist knockout.

1 Jake Ellenberger & Joe Ellenberger

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Former UFC Welterweight Jake Ellenberger has faced the who's who of the division - going up against guys like Stephen Thompson, Jorge Masvidal, and Robbie Lawler. It was not an easy go for Jake in the UFC.

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His brother Joe also had a stint in the promotion. Joe on the other hand, only had two fights in the UFC. Surprisingly, both fighters lost their last fight to the same guy, Bryan Barberena, and in both fights, they lost via TKO.