Poll believes it was a decisive error in the title race.
He wrote in the Daily Mail: "Assistant referee Scott Ledger had a major impact on the Premier League title chase last night as he made two huge wrong decisions.
"Ledger signalled a penalty to Manchester City when Tottenham's Danny Rose made a superb last-ditch tackle to deny Edin Dzeko, leaving referee Andre Marriner with no choice but to show Rose the red card for denying a clear goalscoring opportunity.
"In fact, Rose had clipped the ball away from Dzeko, who then crumpled to the ground.
"Sometimes playing the ball is not enough as the follow-through wipes out the opponent; that was not the case here. It should have been a corner."
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