Question: Cheick Guillaume Ouedraogo holds notable wins over the likes of a mixed martial artist whois currentaly ranked as the #7 contender in what?

Context paragraphs:
Alexander Volkov (fighter): Alexander Yevgenievich Volkov (Russian: Александр Евгеньевич Волков ; born October 24, 1988) is a Russian mixed martial artist who competes in the UFC heavyweight division.  A professional MMA competitor since 2009, Volkov has competed almost exclusively for the M-1 Global promotion, as well as Bellator MMA.  He is a former Heavyweight Champion in both promotions.  He is currently ranked as the #7 contender in the official UFC rankings.

Nathan Coy: Nathan David Coy (born July 24, 1978) is an American mixed martial artist.  He is currently the MFC welterweight Champion and a free agent.  Coy fights out of American Top Team in Florida under Ricardo Liborio and fighters Thiago Alves, Jorge Masvidal, Rich Attonito and Gleison Tibau.  He holds notable wins over UFC fighters Rick Story and Mike Pierce.

Rodney Glunder: Rodney Glunder (born as "Rodney Faverus", March 1, 1975) is a Dutch-Surinamese semi-retired professional kickboxer, mixed martial artist, professional wrestler and boxer, current actor, entrepreneur, bodybuilder.  He has fought for M-1 Global, Cage Rage, K-1, PRIDE Fighting Championship, RINGS, Glory, Konfrontacja Sztuk Walki, It's Showtime, SuperKombat, SLAMM!!  Events and Art of War Fighting Championship.  Glunder holds notable wins over top contenders Cheick Kongo, Valentijn Overeem, Joe Riggs, Melvin Manhoef, Cyrille Diabaté, Brian Douwes and Gregory Tony.

Jerrel Venetiaan: Jerrel Venetiaan (born March 9, 1971) is a retired Dutch kickboxer and mixed martial artist who has fought in Pride Fighting Championships, K-1 and RINGS Holland.  In MMA, he holds notable wins against Daijiro Matsui and RINGS veteran Joop Kasteel.  In kickboxing, he was the champion of two K-1 GPs and defeated talented kickboxers such as Remy Bonjasky, Bjorn Bregy, Xhavit Bajrami and Jorgen Kruth.

Carlo Prater: Carlo Prater (born June 25, 1981) is a Brazilian professional mixed martial artist currently competing in the Lightweight division.  A professional MMA competitor since 2002, Prater has also formerly competed for the UFC, WEC, Strikeforce, the MFC, Vale Tudo Japan, the Palace Fighting Championship, Legacy FC, and Titan FC.  He holds notable wins over Carlos Condit, Melvin Guillard, Pat Healy and Erick Silva.

Rick Cheek: Richard P. "Rick" Cheek (born October 4, 1977) is an American kickboxer and mixed martial artist who competes in the heavyweight division.  A North American Muay Thai champion as an amateur, Cheek turned professional in 2005 and debuted in K-1 the same year.  He holds notable wins over WSOF standout Dave Huckaba in MMA, 2001 K-1 Japan Grand Prix Champion Nicholas Pettas and multiple time world kickboxing champion Mike Sheppard

Zaza Tkeshelashvili: Zaza "Grom" Tkeshelashvili (born March 19, 1965) is a Georgian retired Freestyle wrestling Olympic competitor (100 kg) for Georgia in 1996 Olympic Games Atlanta and mixed martial artist.  He formerly competed in the Heavyweight (MMA) division, most of which he fought with Fighting Network RINGS where he was known as Zaza Grom.  He lost his last fight at Rings Lithuania – Bushido Rings 2 against Volk Han on August 5, 2001.  He holds notable wins over Volk Han and Travis Fulton, and has fought Bobby Hoffman and Renato Sobral.  His brother Koba Tkeshelashvili is also mixed martial artist and has competed in RINGS.

Yushin Okami: Yushin Okami (岡見 勇信 , Okami Yūshin , born July 21, 1981) is a Japanese mixed martial artist currently competing in the Light Heavyweight division of the UFC.  A professional competitor since 2002, Okami has also formerly competed for PRIDE, Pancrase, M-1 Global, World Series of Fighting, and Professional Fighters League.  He holds notable wins over Mark Munoz, Hector Lombard, Alan Belcher (twice),Anderson Silva (Via DQ), Nate Marquardt, former MMA fighter Evan Tanner and Mike Swick.

Eddie Yagin: Eddie Yagin (born March 23, 1979) is a Filipino-American mixed martial artist, who is best known for his two-fight stint with the Ultimate Fighting Championship.  Yagin holds notable wins over Joe Soto and Mark Hominick, and is a former Tachi Palace Fights Featherweight Champion.

Cheick Kongo: Cheick Guillaume Ouedraogo (born May 17, 1975), more commonly known as Cheick Kongo, is a French heavyweight mixed martial artist and former kickboxer who fights in Bellator MMA.  He holds notable wins over the likes of Mirko Cro Cop, Lavar Johnson, Shawn Jordan, Matt Mitrione, Alexander Volkov and Pat Barry.  As of June 19, 2017, he is #12 in the world rankings by Sherdog.

Supporting paragraphs: Cheick Kongo Alexander Volkov (fighter)
Answer: the official UFC rankings