Joe Kinnear suffered his first home defeat as Nottingham Forest manager as his side were hammered 4-1 by Peter Reid's Coventry City.
It was a gloomy afternoon for Forest, who failed to keep their unbeaten record this season, but a highly successful one for the Sky Blues who recorded their first away win of the campaign.
The home side paid for squandering chances in the first 30 minutes, when Gareth Taylor missed a sitter from Andy Reid's cross after 12 minutes.
Andy Morrell opened the scoring for the away side against the run of play, when he was well placed in the Forest box to head past keeper Barry Roche from Michael Doyle's 41st minute corner.
To make matters worse for the home side in the first half, Taylor was sent off for a second bookable offence on the stroke of half-time.
Ten man Forest were totally outplayed in the second half when Coventry came out to wrap up the three points.
After 52 minutes City scored their second of the game when Roche failed to clear a back pass from Andy Impey and Morrell scrambled the ball past Wes Morgan into the empty net.
The home faithful headed towards the exits after only 59 minutes when Eddie Johnson's glancing header from Graham Barrett's inch perfect cross found the bottom right corner of the goal.
The visitors were cruising past the confused Reds defence and scored their fourth when substitute Patrick Suffo found Stephen Hughes at the edge of the box in the 70th minute and the former Arsenal man calmly curled the ball beyond the Roche.
Forest netted a consolation when Reid's pinpoint cross was headed on to the post and into the net by David Johnson four minutes later.
Kinnear will have plenty of questions to ask his players before Forest's away fixture on Bank Holiday Monday against Plymouth Argyle.