Dale Bennett is an injury doubt for AFC Wimbledon ahead of the weekend's clash with Rochdale at Kingsmeadow Stadium.
The on-loan Watford defender had to go off at half-time against Northampton on Saturday with a knee injury, and his absence was felt as the Cobblers scored both their goals in the second half of their 2-0 win.
"Losing Dale Bennett half-time was a big blow," said Dons manager Terry Brown.
"He's a big, strong player and very important to us winning the ball.
"In other areas of the park we did okay but you have to be able to cope with the ball into the box and we didn't do that.
"We've got a squad here which won't change for next Saturday so we need to defend much better than that."