Manager Eddie Howe pinpointed the dismissal of Kieran Trippier as a key moment in Burnley's 2-1 defeat against Leeds.
Trippier was sent off for a second yellow card 16 minutes before the break and Charlie Austin put the Clarets ahead with 21 minutes left.
But Leeds were given a leg-up by Brian Easton's 86th-minute own goal and then turned things around in the fifth minute of injury time, when Ross McCormack pounced on goalkeeper Lee Grant's error to bag the winner. Howe said: "I'm bitterly disappointed."
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I'm proud of the players and I thought we deserved all three points for the defensive display. It was heartbreaking to concede but we can take great heart.
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At 11 v 11 I thought we were the better team.
The ref changed the game with a really poor decision that made it a difficult afternoon for everyone.
The second booking isn't even a foul and it was a big decision to make - a disgraceful one.
"Townsend told Kieran he slipped. Even if it was a foul, the referee has to use common sense. But I thought Townsend was excellent and we had aimed to keep him quiet."