A Newcastle draw would have put Tottenham in the Champions League ... and the 1-1 score filtered through to White Hart Lane (as shown on Match Of The Day).
Sugar fell for it - and he has rowed with supporters who mocked his Twitter scoreline gaffe.
The former Spurs owner branded one critic a 'brain dead t***' after he tweeted that Newcastle had equalised against Arsenal as
the North London rivals battled to secure fourth place in the Premier League and qualify for the Champions League.
Spurs fan Mike Ashley even offered a £1million incentive for Newcastle to beat Arsenal.
Sugar star of the Apprentice on BBC and with almost three million followers, insisted his tweet did not lead to fans going wild when news
of the score through— and that he left the message AFTER believing the Magpies had scored.
He explained on Twitter: 'Truth is crowd at WHL went wild, rumor score was 1-1. No mobile signal in directors box, assumed was correct.
Composed tweet in stand, got sent after game.'
But one of Sugar’s followers said the '1-1 at Newcastle' tweet was sent during the match.
His reply read: 'strange. No signal but you tweeted during the game. Alan... you’re fired.'
A furious Sugar hit back: 'can you read you brain dead t*** composed in the stand, sent after game automatically when signal became