Douglas Ma'afu Hawke, better known as Doug "Vicious" Viney (born 20 November 1976) is a Tongan-New Zealander heavyweight boxer and kickboxer. He is the K-1 World GP 2007 in Las Vegas champion, who also represented Tonga as a super heavyweight boxer under the name of Ma'afu Hawke at 2004 Summer Olympics in Athens, Greece.^[1]

Viney made his K-1 debut on 21 July 2001 at the K-1 New Zealand Grand Prix 2001. He knocked out Dion Crouch and Auckland Aumitagi in the quarter and semi-finals, respectively, before going on to face Rony Sefo in the final, who he defeated via decision. He then went on to the K-1 World Grand Prix 2002 Preliminary Melbourne in February 2002, where he was defeated in the semi-finals by Andrew Peck after beating Chris Chrisopoulides in the quarters. In November 2002, he again entered the New Zealand Grand Prix at K-1 New Zealand 2002 where he reached the final only to be defeated by Jason Suttie.

He then went on to lose his next two fights after this also, and then switched to the sport of boxing. In the summer of 2004, he represented Tonga as a super heavyweight boxer under the name of Ma'afu Hawke at 2004 Summer Olympics in Athens, Greece. After the Olympics, he made his professional boxing debut on 3 September 2005 by defeating Junior Pati by decision.

He returned to kickboxing in 2006, winning his first three fights, including a decision win over Peter Graham. On 4 May 2007, he took part in the eight-man tournament at K-1 Fighting Network Romania 2007 and was defeated in the quarter-finals by Brecht Wallis. Three months later, on 11 August, he was reserve fighter at the K-1 World Grand Prix 2007 in Las Vegas. After defeating Mahmoud Fawzy in the reserve match, he was called in to the semi-finals to face Aleksandr Pitchkounov after Rick Cheek pulled out of the tournament with an injury. He was able to defeat Aleksandr Pitchkounov, and then went on to beat Zabit Samedov in the final.^[2]

After winning the Las Vegas Grand Prix, he was given a place in the last 16 of the 2007 K-1 World Grand Prix. He was knocked out in round 2 by Badr Hari at the K-1 World Grand Prix 2007 in Seoul Final 16. He then returned in 2008 at the K-1 World Grand Prix 2008 in Amsterdam where he rematched Zabit Samedov in the semi-finals. Samedov was able to take his revenge, winning by decision and knocking Viney out of the tournament.

• 2007 K-1 World Grand Prix Las Vegas 8 man Champion
• 2006 Kings of Oceania Champion
• 2004 Athens Summer Olympian
• 2004 Oceania Amateur Heavyweight Boxing Champion
• 2001 K-1 New Zealand 8 man Champion

• List of male kickboxers
• List of K-1 Events
• List of K-1 champions