Tottenham were reduced to nine men within 47 minutes of Saturday's Premier League clash at Bournemouth.
With Heung-min Son having been sent off in the first half for violent conduct by referee Craig Pawson, the official then showed a straight red card to Juan Foyth two minutes after the restart.
With Mauricio Pochettino already missing star striker Harry Kane through injury, Son stretched Spurs' resources further when he was dismissed after 43 minutes at Vitality Stadium.
The South Korea international was put under pressure by a number of Bournemouth defenders in a physical tussle, and reacted violently by aiming a kick at Jefferson Lerma before pushing the Cherries midfielder to the floor.
With Lerma rolling around in seeming agony following the kick at his ankle, referee Craig Pawson - just metres from the incident - had no option but to show Son a straight red card.
Eric Dier was also treading a thin line with Pawson, having been booked for a lunging challenge before two challenges - one in the Bournemouth area - went unpunished when a second yellow could - and perhaps should - have followed either tackle.
With Toby Alderweireld also on a booking, Pochettino opted to hook both the Belgian and Dier at the interval - but his plans went up in smoke two minutes into the second half.
Foyth took a heavy touch and overran the ball before lunging in and catching Jack Simpson on the knee with an ugly challenge, and Pawson once again showed the player a red card.
As a result of Son's dismissal being due of violent conduct, the forward now faces a three-game domestic suspension.
With Spurs facing just one more Premier League game - at home to Everton on the final day of the season - that would see the forward miss the first two games of the 2019-20 season unless the red card is overturned.
The silver lining for Spurs may be that Son is fresh for Wednesday's must-win Champions League semi-final second leg against Ajax in Amsterdam.
That match will be Son's final game of the season - unless he can inspire a comeback win to set up a Champions League Final against either Liverpool or Barcelona on June 1.
