Wycombe Wanderers substitute Gary Doherty scored a late equaliser to earn his side a point and deny promotion-chasing Rotherham a vital victory.
Joel Grant gave the hosts an early lead when he outpaced Millers' Dale Tonge to convert Dean Morgan's low delivery.
But Daniel Nardiello headed in Liam Ridehalgh's cross and volleyed home Ben Pringle's pass to put Rotherham ahead.
However, Doherty, playing for the first time since 3 November, made it 2-2 with a header from Sam Wood's corner.
Rotherham, who are now fifth and three points behind third-placed Port Vale, had a late chance to win it but Wycombe goalkeeper Jordan Archer saved Claude Davis's header.
VIEW FROM THE DRESSING ROOM
Rotherham United manager Steve Evans told BBC Radio Sheffield:
"For the first 20 minutes we were poor. We couldn't get in the game, we looked like we were still on the coach if I'm honest.
"We had a few stern words to say in the dressing room, pointed a few fingers but the reaction they gave us was tremendous.
"We got two great individual goals from (Daniel) Nardiello
"We'll take that late goal against us on the chin, we'll go forward and we'll bounce again."