Luton Town striker James Collins saw a penalty ruled out for kicking the ball twice as 10-man Middlesbrough held out for victory against the Hatters.
The visitors trailed to Chuba Akpom's goal, before Sam Morsy was sent off for handball from a Collins shot.
Collins struck the resultant penalty past Marcus Bettinelli in the Boro goal but referee Andy Davies spotted that he had touched the ball twice and disallowed the goal.
The Hatters nearly snatched a point in time added on but Bettinelli made a fine save from Luke Berry's header.
This was actually the second time this season that a team has had a penalty disallowed for the taker kicking it twice at the Riverside, after Boro forward Marcus Tavernier saw one ruled out in the home defeat by Norwich.