Walter Jermaine Harris (born June 10, 1983) is an American mixed martial artist currently competing in the Heavyweight division of the Ultimate Fighting Championship. A professional since 2011, Harris has also formerly competed for Titan FC.
Background
Before entering mixed martial arts in 2010, Harris was a basketball player at Jacksonville State University

Mixed martial arts career
Early career
Harris competed as an amateur from 2009–2010, compiling a record of 4–1. He made his professional debut on March 15, 2011, when he faced Justin Thornton at HEF: Hess Extreme Fighting. He won via first-round TKO, just sixteen seconds into the first round. Following this, Harris compiled a record of 6–1, with wins over Tony Melton and UFC veteran Anthony Hamilton, before signing with UFC in the fall of 2013.

Ultimate Fighting Championship
On September 19, 2013, it was announced that Harris had signed with the UFC, and he faced fellow newcomer Jared Rosholt at The Ultimate Fighter 18 Finale on November 30, 2013. Despite dropping Rosholt in the first round, Rosholt rallied back and Harris lost the fight via unanimous decision.

In his second fight with the promotion, Harris faced Nikita Krylov at UFC on Fox 10 on January 25, 2014. Though he was the considerable favorite coming into the bout, Harris was staggered by a head kick from Krylov, and after follow-up strikes on the ground from Krylov, he lost the bout via TKO, just 25 seconds into the first round. After dropping to 0–2 in the UFC, Harris was subsequently released from the promotion.
Titan Fighting Championship
Following his UFC release, Harris signed with Florida based promotion Titan FC. He faced D.J. Linderman at Titan FC 28 on May 16, 2014. He won the fight via first-round knockout. He was expected to face Dave Herman at Titan FC 30 on September 26, 2014. However, Harris pulled out of the bout due to a back injury and the fight was postponed.
The bout with Herman was rescheduled and was expected to take place on December 19, 2014. However, Harris resigned with the UFC, and he was replaced by Jon Madsen.
Return to UFC
After Daniel Omielańczuk was forced to pull out of his bout with Soa Palelei due to a thumb injury, Harris resigned with UFC and faced Palelei at UFC Fight Night 55 on November 7, 2014. He lost the fight via second-round TKO.
Harris faced promotional newcomer Cody East on April 23, 2016, at UFC 197. He won the fight via TKO in the first round.
Harris next faced Shamil Abdurakhimov on October 1, 2016, at UFC Fight Night 96. He lost the fight via split decision.
Harris faced Chase Sherman on January 15, 2017, at UFC Fight Night 103. He won the fight by knockout in the second round.
Harris made his next appearance against Cyril Asker on June 17, 2017, at UFC Fight Night 111. He won the fight early in the first round via TKO due to a combination of elbows and punches.
Harris was expected to face Mark Godbeer on October 7, 2017, at UFC 216 before a fight-day injury to Derrick Lewis took him out of his scheduled fight with Fabrício Werdum. As a result, Harris moved on to face Werdum, and Godbeer was pulled from the event. Harris lost the fight via submission in the first round.
The bout with Godbeer was quickly rescheduled and took place on November 4, 2017, at UFC 217. Harris lost the bout by disqualification after Harris hit Godbeer with a head kick following the referee calling a time out due to a groin strike.
Harris faced Daniel Spitz on June 1, 2018, at UFC Fight Night 131. He won the fight via knock out in the second round.
Harris faced Andrei Arlovski on December 29, 2018, at UFC 232. He won the fight via split decision. It was reported on January 26, 2019, that Harris tested positive for LGD4033, and selective androgen receptor modulators (SARMs) like ostarine, and he was temporarily suspended by California State Athletic Commission (CSAC). In February, Harris was suspended for four months and fined $4,000. The fight result was overturned to a no contest. Per the CSAC, Harris was able to prove the positive test resulted from a tainted supplement and the commission does not believe he was an intentional doper, hence the shorter suspension.
Harris was expected to face Alexey Oleynik on May 4, 2019, at UFC Fight Night 151. However, on April 3, 2019, it was announced that Oleinik would face Alistair Overeem at UFC Fight Night 149 after Alexander Volkov withdrew from the event. He was replaced by Sergey Spivak. Harris won the fight via TKO in the first round. This fight earned Harris his first Performance of the Night bonus award.





