Spratt made his mixed martial arts debut in early 1999 when he defeated Jeremiah O’Neal by submission (rear naked choke) in the first round. He then won 9 of his next 14 fights including a win over MMA veteran Rich Clementi to bring his Mixed Martial Arts record to 10-5 before receiving his first call up to the UFC.

Spratt and his wife had a daughter on March 25, 2008. He has two daughters from a previous relationship.

Spratt next fought Keith Wisniewski on 2 January 2010 losing via submission (rear naked choke) in the first round but he bounced back in his third fight with the MFC promotion by defeating UFC veteran Luigi Fioravanti via TKO in the third round. In this fight Spratt showed improved takedown defense and ground game.

Spratt faced Demi Deeds on 8 April 2011 at MFC 29: Conquer. After a close first round, Spratt turned up the pressure in the second landing some strong leg kicks and punches until he got on top of Deeds late in the round before quickly transitioning to an impressive armbar finish to gain his first win in almost a year.

On July 22, 2011, at LFC 7 Spratt racked up his fastest knockout to date, defeating Antonio Flores with a clean overhand left only 18 seconds into the opening round.

March 30, 2012 he fought Daniel Acácio and KO’d him at exactly the 5 minute mark at the end of the third round, due to this technicality the fight was scored a technical decision.

Spratt faced Dan Hornbuckle on February 1, 2013 at Legacy FC 17. He lost the fight via unanimous decision.

Spratt faced UFC vet Tim Means on September 13, 2013 at Legacy FC 23, He lost the fight via knockout due to elbows and punches in the first round. After his loss to Means, he announced his retirement from MMA fighting. Spratt later changed his mind about retiring and after reviewing the footage claimed that while the elbow knocked him down, it was the follow up punches that knocked him out and because they were shots to the back of his head they were illegal shots, and the fight should have been ruled a No-Contest due to illegal strikes. Spratt also stated he would officially appeal the decision with the Athletic Commission; it is unknown whether or not Spratt did submit an appeal, but if he did it was rejected as his fight with Means is still recorded as a loss by popular MMA record keeping sites. Tim Means’s manager Tom Vaughn and Legacy FC promoter Mick Maynard didn’t respond to MMA Junkie’s request for comment regarding Spratt’s claim.

Returning from a one-year retirement, Spratt was expected to face Shane Campbell at MFC 41 on October 3, 2014. However, the bout was cancelled for unknown reasons.