Roy Keane is back in football management after taking the reins at Ipswich Town last week. The fiery Irishman's return to the game following a five-month sabbatical means the competition for the tag of angriest manager just got even more intense. But who are Keane's rivals when it comes to the manager with the shortest fuse in English football?
Sir Alex Ferguson
The veteran Manchester United boss' motivational techniques are now the stuff of legend and range from throwing tea cups at half-time to delivering the infamous 'hairdryer' treatment to under-performing players. David Beckham was an alleged high-profile victim of Ferguson's short fuse when he required stitches after being struck in the face by a stray boot kicked across the dressing room by the seething Scot.
Neil Warnock
Warnock's season in the Premier League with Sheffield United in 2006-07 was surprisingly low-key but that has not always been the case for the hot-headed Yorkshireman. Few referees have escaped his wrath and his list of disputes with opposition players, managers and supporters is far too long to detail.
Luiz Felipe Scolari
The former Brazil and Portugal coach was remarkably restrained during his ill-fated seven-month spell at Chelsea earlier this season. But before his brief stint in the Premier League, Big Phil punched a Serbian player who angered him at the end of a Euro 2008 qualifier and, at the 2002 World Cup, he attempted to build team spirit by giving each of his players a copy of Sun Tzu's The Art of War.
Joe Kinnear
Kinnear wasted little time in announcing himself to the local media after being unveiled as the surprise choice to become Newcastle United's interim manager in September 2008. He swore 52 times during a foul-mouthed rant at the assembled media before finding himself in a hospital bed just four months later after suffering the second serious heart complaint of his managerial career.
Sam Allardyce
It's fair to assume that Allardyce's heart-rate will once again be reaching dangerous levels with his Blackburn Rovers side involved in a relegation dogfight. His heart reached a frightening 160 beats per minute when he lived, breathed and argued every moment of a game for former club Bolton Wanderers when wired up for a television documentary. The combustible 54-year-old shows no sign of mellowing with age as he is regularly seen berating officials as he prowls the technical area. Always linked with manager vacancies by online betting experts.