Relegation rivals Chesterfield and Blackpool traded punches but had to settle for a 1-1 draw in an entertaining game at the Proact Stadium.
Brad Potts fired Blackpool ahead before Jay O'Shea equalised, and the visitors had captain David Ferguson sent off for a second yellow card near the end.
Blackpool defender Tom Aldred almost sliced a cross into his own net in the 15th minute before Gboly Ariyibi struck the outside of a post two minutes later.
Chesterfield had an escape in the 21st minute when Potts struck the inside of a post from 25 yards and Blackpool were unlucky in the 40th minute when Clark Robertson's header hit the bar and Aldred headed the rebound against a post.
Potts put Blackpool in front in the 53rd minute with a 20-yard shot that was deflected past Tommy Lee but Chesterfield were level four minutes later when substitute O'Shea found the top corner from 25 yards.
Potts and Uche Ikpeazu had chances and Lee beat out a Jack Redshaw shot but Blackpool played out stoppage time with 10 men when Ferguson was shown a second yellow for pulling back Ariyibi.