Gary Alexander rescued a point for 10-man Crawley with a late equaliser to deny AFC Wimbledon and extend his side's unbeaten run to 11 games.
Crawley defender Hope Akpan was sent off in the sixth minute for a wild lunge on Jason Prior, who was stretchered off with a broken leg.
Sammy Moore put the Dons ahead by blasting home from 15 yards following a square pass by George Moncur.
But Alexander equalised soon afterwards with an equally emphatic finish.
VIEWS FROM THE TRAINING GROUND
AFC Wimbledon manager Terry Brown told BBC London 94.9:
"Jason Prior is in hospital, they're going to keep him in overnight, they're debating whether to operate, he's broken his leg but we are not too sure the extent of the damage.
"He will be out four six to eight months.
"I don't think there was anything malicious by the boy, of course it was a sending off because he broke his leg but it was not malicious."
Crawley Town 01 Kuipers 03 Howell 18 Dempster Booked 20 Wassmer 02 Davies Booked 06 Akpan Dismissed 07 Clarke (Watt - 79' ) 11 Simpson 15 Bulman 22 Neilson 09 Alexander Substitutes 25 Shearer 30 Cummings 31 James 10 Watt 17 Akinde AFC Wimbledon 01 Brown 03 Gwillim 05 Stuart 07 Hatton 10 Midson 17 Mitchell-King 12 Jolley 15 S Moore Booked 25 Moncur 11 L Moore 30 Prior (Harrison - 9' ) Substitutes 20 Turner 13 Bush 19 Djilali 23 Yussuff 27 Harrison