Keiren Westwood's penalty save maintained Sheffield Wednesday's slim hopes of Sky Bet Championship survival in a goalless draw against Nottingham Forest at Hillsborough.
The goalkeeper excellently kept out Lewis Grabban's spot-kick in first-half stoppage-time but Darren Moore's men will still go down should Derby pick up a point from their remaining two fixtures.
Wayne Rooney's Rams face Swansea before Wednesday head to Pride Park next weekend for a potentially decisive showdown.
The hosts started with purpose in their penultimate fixture and a dangerous early cross by Barry Bannan had to be palmed out for a corner by Forest goalkeeper Brice Samba at the far post.