Sean O'Connell height - How tall is Sean O'Connell?

O'Connell signed with PFL in 2018. In his debut, he faced Ronny Markes at PFL 2 on June 21, 2018 in Chicago, Illinois, winning the fight by TKO in the second round.

In his second fight for the promotion, O'Connell faced Bazigit Atajev at PFL 7 on August 30, 2018. He lost the fight via TKO in the first round.

In the fall of 2018, O'Connell entered the PFL Light Heavyweight tournament. At PFL 9 on October 13, 2018, he defeated Dan Spohn by majority decision in the quarterfinal round and then fought Smealinho Rama in the semifinal round the same night, winning by knockout. O'Connell faced Vinny Magalhães in the finals at PFL 11 on December 31, 2018. He won the back-and-forth fight via TKO between the third and fourth round after Vinny Magalhães stopped the bout. With the win, O'Connell was crowned the 2018 PFL Light Heavyweight champion and earned the $1 million cash prize.

O'Connell faced Ilir Latifi on January 17, 2016 at UFC Fight Night 81. He lost the fight by knockout in the first round.

O'Connell next faced Steve Bossé on June 18, 2016 at UFC Fight Night 89. Bossé was awarded a unanimous decision victory. The back and forth action earned both participants Fight of the Night honors.

O'Connell faced Corey Anderson on December 9, 2016 at UFC Fight Night 102. He lost the fight by TKO in the second round.

On January 18, 2015, O'Connell then faced Matt Van Buren at UFC Fight Night 59.; he won via third-round TKO. Both participants earned Fight of the Night honors. He then faced Anthony Perosh on May 10, 2015 at UFC Fight Night 65. He won the fight via TKO in the first round.

O'Connell made his promotional debut as a short notice injury replacement at The Ultimate Fighter Nations Finale on April 16, 2014 against Ryan Jimmo. O'Connell was defeated via knockout in the first round.

His next appearance was also a short notice fight against Gian Villante on June 28, 2014 at UFC Fight Night 43, where he replaced an injured Anthony Perosh. O'Connell lost the fight via split decision. Their performance earned both participants Fight of the Night honors.

O'Connell made his professional MMA debut in 2007 with no previous training other than cardio kickboxing which he would do to help stay in shape. Despite having limited training, O'Connell was successful early on in his career and held an overall record of 6-2, which earned him an invitation to compete on The Ultimate Fighter: Team Nogueira vs. Team Mir. O'Connell, however, was eliminated in the opening round to make it to the final cast. O'Connell, who also ran a talk show for a radio station in San Francisco at the time, was on a five-fight winning streak and held an overall professional record of 14-4, before inviting UFC president Dana White to come onto his show. O'Connell asked White for a contract and was signed a year later. O'Connell was the co-host of a popular sports talk radio show on ESPN700 in Utah called The OC and Hackett Show

Sean O'Connell (born September 2, 1983) is a retired American professional mixed martial artist who most recently competed in the Light Heavyweight division of the Professional Fighters League. A professional competitor since 2007, O'Connell has formerly competed for the Ultimate Fighting Championship and Maximum Fighting Championship.