Wimbledon completed a League Two double over Portsmouth on Saturday.
Ben Chorley's early own goal was enough to see the Dons triumph 1-0 at Kingsmeadow and make it two wins out of two against Pompey following their 2-0 win at Fratton Park on Boxing Day.
Chorley's unfortunate moment came in the sixth minute as the defender stuck out a leg and diverted on-loan Reading striker Craig Tanner's effort beyond the despairing Portsmouth goalkeeper.
"It doesn't matter how you win, you just need to win," victorious Dons manager Neal Ardley said. "It's been a tough three weeks, with the injuries to James Shea, David Connelly's retirement, Dave Wingfield gets called back, Callum Kennedy and George Francombe get injured. I fancied us to win despite all that. It's typical Wimbledon style, when going gets tough, we respond.
"It was a great response at the end of a tough week. We played really well at Mansfield, deserved three points and came out with none. There was the soft penalty at Exeter, so to end it with three points was perfect. I'm delighted for Craig Tanner. People have talked about the fact that he hasn't scored and that maybe he's not a League Two player, but he showed he has qualities much higher."