Northampton Town's hopes of avoiding relegation out of the Football League suffered a blow on Tuesday night as they were well beaten at home by promotion-chasing Rochdale.
The 3-0 reverse at Sixfields marks the end of the Cobblers recent unbeaten run and leaves them still three points adrift of safety.
Goals from Henderson and Lund put Rochdale in command and the visitors were able to withstand the sending off of Lund, who received a second yellow card for overdoing his celebrations, even adding a third goal through Bunney.
The fight for survival now goes to Morecambe on Saturday afternoon. The Shrimps were well beaten in a Lancashire derby at Accrington on Tuesday night, a result that moves Stanley six points clear of danger.
Elsewhere at the foot of the table, Wycombe Wanderers gained an important point at Cheltenham while a win for bottom club Torquay United keeps Bury in the relegation mix.