Arsenal boss Mikel Arteta felt his side denied themselves a first Premier League win since early November.
Defender Gabriel picked up two yellow cards inside five second half minutes in a 1-1 draw with Southampton.
The Brazilian became the third Arsenal player to be shown the line in five matches.
Arsenal had been in the ascendancy at the time, after Pierre Emerick Aubameyang had cancelled out Theo Walcott's opener at the Emirates.
"Considering the fact that we played 35 mins with ten men we have to take the point because we showed some resilience and character to hang in there for so long against a really dangerous team," the Spaniard said afterwards.
"But at the same time really disappointed because we came back after conceding the goal.
"We showed how much we want it, we created some situations and after half time we corrected a few things, we came back really strong in the game scored a good goal.
"But when we have the best moment again we shoot ourselves in the foot."
Arteta was at a loss to explain the frequency with which his side had been collecting red cards of late, saying, "It’s very difficult to compete in this league when you play as well for such a long period with ten men.
"And we were struggling for the result which makes it even more complicated.
"But I think that the boys stood up through it and they showed a lot of character and again a lot of resilience and they never gave up.
"After 1-0 I was worried because after this moment you can start to see players tiring and it didn’t really help."
Despite the wait for a win continuing, Arteta feels the point could prove very valuable in the long run, "Because at the end if we lose the game again that would be a difficult one to take.
"The players showed what we expect them to do. Some will be with more or less quality but at least the work is there.
"I saw all the players that weren’t participating and they were on the stands shouting and they were being right behind the team and living the game with them which is a really strong signal as well and I’m really proud."