Andy Williams scored twice as Northampton recorded their first home win of the season with a 3-1 victory over Plymouth.
The Cobblers were ahead on seven minutes when Sam Hoskins' cross hit an arm and Ryan Watson stuck away the spot-kick, but it was 1-1 just three minutes later as Danny Mayor was fouled and Joe Riley drilled the free-kick under the wall.
Northampton were back in front midway through the first half though as Hoskins sent in a teasing low cross and Williams stretched out a leg to divert into the bottom corner.
Argyle's Gary Sawyer headed over from underneath the crossbar and Nicky Adams hit the post with a Northampton free-kick before the home side made it 3-1 just shy of half-time thanks to Williams, who volleyed home another Hoskins cross.
Alex Palmer produced a brilliant save to thwart Hoskins in first-half stoppage-time and though Plymouth pressed in the second half, Byron Moore skied over from just a few yards out and David Cornell brilliantly denied George Cooper late on.