Matthew Polinsky (born February 24, 1984) is an American sports commentator, university professor, and retired professional wrestler. He is signed to WWE, where he performs under the ring name Corey Graves as the color commentator on the SmackDown brand as well as the English play-by-play commentator in its sister promotion, Lucha Libre AAA Worldwide. As a former in-ring competitor, he is a one-time NXT Tag Team Champion, and won the WWE 24/7 Champion once even though he had been retired from in-ring competition.

Polinsky is also known for his work on the independent circuit under the ring name Sterling James Keenan.

Early life Polinsky was born and raised in Pittsburgh, Pennsylvania. He attended college and obtained a degree in marketing.

Professional wrestling career

Independent promotions (2000–2009) Polinsky chose his ring name the night before his first professional wrestling match, and picked the name Sterling James Keenan as a tribute to Sterling Sharpe, Polinsky's favorite American football player as a child, and Maynard James Keenan of the band Tool.

Keenan debuted on March 22, 2000. Throughout the next few years, Keenan appeared for various promotions, including Dory Funk Jr.'s "Funking Conservatory", where he competed with wrestlers including Paul London, Adam Windsor, and Onyx. In 2002, Keenan teamed with "Dreamachine" Chris Cage to win the Funkin Conservatory Tag Team Championship by defeating the team of London and Windsor.

Keenan also made appearances for NWA Upstate, Independent Wrestling Association Mid-South, Cleveland All-Pro Wrestling, and Full Throttle Wrestling. On April 26, 2002, in NWA East / Pro Wrestling eXpress, Keenan and Mad Mike won the NWA East Tag Team Championship by defeating The Premiere Players. Keenan was part of the Union of Independent Professional Wrestlers promotion in both of its incarnations. He won the UIPW Keystone Cruiserweight Championship. Beginning in 2005, he appeared regularly for Far North Wrestling (FNW), and on November 2, 2007, he won a Battle royal to win the FNW Heavyweight Championship. He defeated Samoa Joe and Rikishi by countout on August 23, 2007 to win the Ballpark Brawl Natural Heavyweight Title. On February 24, 2008, Keenan won Absolute Intense Wrestling's Heavyweight Championship by winning a 30-Man gauntlet match.

Keenan competed for Pro Wrestling Zero1 and won the Zero-One United States Heavyweight Championship on two occasions. On March 8, 2008, Keenan defeated Mr. Wrestling 3 in Pittsburgh, Pennsylvania to win the championship for the first time. He only held the championship for a week before dropping it to Dr. X on March 15 in Morganville, New Jersey. On May 9, Keenan won the championship for the second time, defeating Jake Manning in Limerick, Pennsylvania. He held the championship for just under a month before losing it to Rick Landell on June 1.

Throughout the years, Keenan has also made sporadic appearances for Ring of Honor (ROH). His debut appearance for the promotion was at Round Robin Challenge II on April 25, 2003, where he teamed with E. Z. Money in a Tag Team Scramble match won by The S.A.T. He returned to ROH over two years later at Redemption on August 12, 2005, where he participated in a Four Corner Survival match won by Ace Steel. In October 2005, he lost a singles match to Claudio Castagnoli and a singles match between Keenan and Steel at Tag Wars 2006 in January 2006 ended in a no contest due to interference from Chris Hero and the Necro Butcher. Six months later, at In Your Face, Keenan and Jason Blade lost a tag team match to The Briscoe Brothers. He made a single appearance in ROH in 2007 at the Fifth Year Festival: Dayton event, losing to Jimmy Rave and another appearance in March 2009 at Steel City Clash, losing to Delirious. He also appeared on the Ring of Honor Wrestling television show on the April 4, 2009 episode, losing to Erick Stevens.

International Wrestling Cartel (2002–2007) Keenan debuted in the International Wrestling Cartel (IWC) on October 19, 2002, defeating Troy Lords. On the following IWC show, Keenan defeated CM Punk, before losing to Shirley Doe on two occasions but defeating Josh Prohibition. On December 28, Keenan teamed with Dustin Ardine to challenge the Devil's Advocates for the IWC Tag Team Championship, but were unsuccessful. In May 2003, Keenan participated in IWC's Super Indy tournament, defeating B. J. Whitmer in the first round, but losing to Colt Cabana in the second.

At IWC's Revengeance show in September, Keenan defeated Al B. Damm to earn a match for the IWC Heavyweight Championship. He received his championship match on November 1, 2003, and defeated Dennis Gregory to win the championship. At Rebirth of Extreme on November 22, Keenan successfully retained the championship in a rematch against Gregory, and made further successful defences against Punk on December 12, Dean Radford on January 31, 2004, and February 24, and against Super Hentai on March 6. Two weeks later, on March 20, Keenan lost the IWC Heavyweight Championship to Radford, and failed to regain it in a rematch on April 3, and on April 17, when he lost a Tables match to Radford.

In July 2004, Keenan unsuccessfully challenged Chris Sabin for the IWC Super Indy Championship. That December, after Sabin had vacated the IWC Super Indy Championship, Keenan won a four-way match against Petey Williams, Josh Prohibition, and John McChesney to win the vacant championship. He made a successful defense of the championship against AJ Styles on February 24, 2005, and Claudio Castagnoli the following night. In April he retained the championship against Nate Webb, before losing a championship match to Justin Idol by countout in final championship defense on April 29, 2005. That same night, McChesney won the Super Indy Tournament, winning the championship as part of his victory, despite having not beaten Keenan. The next night, a match for the championship between Keenan and McChesney ended in a double countout.

In March 2006, Keenan unsuccessfully challenged Doe for the IWC Heavyweight Championship. That September, Keenan was part of a tournament for the vacant IWC Heavyweight Championship, but was eliminated in the first round after losing to Ricky Reyes. On August 4, 2007, Keenan lost another match for the championship, this time to long-time rival Dennis Gregory, in what proved to be his final match in the company.

One Pro Wrestling (2005–2009) Keenan made his debut for the United Kingdom-based 1 Pro Wrestling (1PW) at their inaugural show, A Cruel Twist of Fate, on October 1, 2005, defeating D'Lo Brown. He quickly formed an alliance with Abyss, and the pair defeated Sabu and Ulf Herman in a hardcore tag team match on January 7, 2006. In March, Keenan competed in a tournament to determine the inaugural 1PW Heavyweight Champion, but was defeated by AJ Styles in a quarter-final match.

He moved on to feud with Spud, defeating him on May 26 at Know Your Enemy Night One. At Fight Club 2 in July, Keenan defeated Spud in an Iron City Street Fight. Three weeks later, Keenan replaced Matt Hyson in a tag team match, where he and Spud challenged Jody Fleisch and Jonny Storm for the 1PW Tag Team Championship. They were unsuccessful after Keenan attacked Spud during the match. At Invincible in August, a tag team match featuring Keenan and Hyson versus Spud and Teddy Hart ended in a no contest after several other wrestlers interfered, prompting a 10-man elimination tag team match, which Keenan's team won.

At Resurrection in April 2007, Keenan challenged Romeo Roselli for the Nu-Wrestling Evolution Heavyweight Championship, but was disqualified for using the championship belt as a weapon. He then began challenging Ulf Herman for the 1PW Heavyweight Championship, but was unsuccessful in a four-way match on June 29 when Herman retained the championship. Keenan failed to win the championship again on June 30 and August 18. On October 13, at 2nd Anniversary Show, Keenan defeated Herman to win the championship in a steel cage match. Keenan successfully defended the championship against Doug Williams on January 25, 2008, and Martin Stone, Darren Burridge and Abyss in a four-way match the following night. His next defense was on October, when he lost to Johnny Moss via disqualification, and retaining the championship as a result. At the 3rd Anniversary Show that same month, Keenan retained the championship against Raven. Keenan eventually lost the championship to Martin Stone on April 18, 2009 at To The Extreme, ending his championship reign at 554 days. He continued to feud with Stone in an unsuccessful attempt to regain the championship throughout 2009, and made his final 1PW appearance at the 4th Anniversary Show in November.

WWE / Lucha Libre AAA Worldwide (2006–2007; 2011–present) Enhancement talent (2006–2007) Before signing a contract with WWE, Keenan made several appearances for the company. On April 26, 2006, Keenan and CM Punk lost a dark match to The Gymini prior to the SmackDown taping. On June 6, 2006, Keenan teamed with Jon Bolen in a loss to Jamie Noble and Kid Kash. Keenan appeared on an episode of WWE Heat that was taped on August 6, losing to Val Venis. Keenan appeared on the August 10, 2007, episode of SmackDown!, where he was easily squashed by Mark Henry.

Developmental territories (2011–2014) In August 2011, it was reported that Polinsky had signed a developmental contract with WWE. Polinsky announced that he would be performing in WWE's developmental territory, Florida Championship Wrestling (FCW), under the ring name Corey Graves. He debuted at the FCW television tapings on September 25, losing to Erick Rowan. The following year, on March 17, 2012, Graves won the FCW Florida Tag Team Championship with Jake Carter by defeating Bo Rotundo and Husky Harris. When WWE rebranded FCW into NXT, Graves and Carter participated in the inaugural tapings in June 2012. They defeated CJ Parker and Nick Rogers in a match that aired in July.