Wolves could only draw against Coventry who pushed them all the way in a deserved draw in the Molineux rain.
Leigh Griffiths put Wolves ahead in the 67th minute in front of Molineux’s biggest crowd of the season, 22,939.
But Kenny Jackett’s side were pegged back by a stunning equaliser from substitute Aaron Phillips four minutes from time.
There were minimal chances for both sides with Wolves’ man of the match James Henry forcing Joe Murphy into a save while Carl Ikeme tipped Carl Baker’s free kick away in an improved second half after a fairly dull opening period.
Jackett made five changes from the Johnstone’s Paints Trophy second-round penalties exit to Notts County.
Matt Doherty, Danny Batth, Sam Ricketts, Bakary Sako and Kevin Doyle returned as the back four completely changed to replace Kevin Foley, Elliott-Ebanks-Landell, Richard Stearman, George Elokobi and Jake Cassidy.
The game started at a decent tempo before dropping off in what was a mediocre first half which was greeted by generous applause by the crowd.
There was a positive start from Wolves and Griffiths was almost in the clear after Coventry’s defence failed to clear Matt Doherty’s long pass.
Griffiths was the target again, this time from a great ball by Kevin Doyle but he was blocked by Jordan Clarke as he tried to go around the Sky Blues defender.
The first real chance of the opening half went to Wolves as Doyle was presented with a sniff of goal but it was wasted as Sako’s near-post corner was hooked well over in the sixth minute after Sako’s shot was deflected behind off Carl Baker.
Coventry hit back and Callum Wilson’s shot was deflected behind off Danny Batth.
Wolves’ flow was disrupted 10 minutes before the break when Jack Price went off with what appeared to be a problem with his left eye, to be replaced by David Davis.
The home side tried not to let it disrupt them too much and Kevin McDonald tried to chip Murphy from 50 yards after a poor kick by the backpedalling keeper only for the ball to sails a few feet over.
Sako was perhaps too selfish when he blazed high and wide when Henry was perfectly placed for a pass ahead of him after Doyle spread the play intelligently in the 35th minute.
Jackett’s side were constantly trying to change the angles of their attack but they still struggled to keep the ball at times.
But their best piece of play of the half followed after a lovely cushioned volley by Sako fell nicely for Doyle and eventually Griffiths fired over from Henry’s lay-off in the 40 minute.
Wolves fans had to wait until the minute of time added on at the end of the first half for their best chance however, when the unmarked Doyle skimmed his header wide from Henry’s cross.
The home side made a bright start to the second half as the rain started to lash down and Henry forced the first save of the afternoon with a smart turn and shot parried behind seconds after the restart.
The move came after a neat backheel by Griffiths to the overlapping Doherty for a diagonal pass inside.
Wolves continued to attack and Danny Batth’s towering header came off Leon Clarke before Henry’s flag kick was headed over by the unmarked Griffiths on 49 amid a flurry of home corners.
Man of the match Henry lashed over an angled volley after Griffiths and Jordan Clarke challenged for a cross on 53.
But Coventry were always in the game and it took the combined efforts of Batth and Doherty sliding in to clear as clean-through Leon Clarke prepared to shoot in the 54th minute.
The Sky Blues remained on the offensive and John Fleck had their best effort yet with a low shot that looked like it took a deflection before flying just wide of the far post three minutes later after Scott Golbourne gave the ball away seconds after Davis won it back.
There was then a real chance for Coventry as Leon Clarke climbed above Doherty at the far post but his header floated on top of the net from Wilson’s cross on 66.
But it was Wolves who grabbed the breakthrough a minute later when Griffiths took a touch before sliding right-footed under the advancing Joe Murphy for his eighth goal of the season.
Griffiths struck after Batth flicked the ball back into the danger area from Golbourne’s cross after Sako’s free kick was headed away.
Immediately after the goal and while Wolves fans were celebrating it, two Coventry fans were held by stewards after running onto the pitch and others tried to follow but were held back.
Back on the pitch, it took a superb sliding challenge by Batth to fend off Wilson’s surging run and shot in the 70th minute.
Wolves made their second switch as Griffiths made way for Bjorn Sigurdarson in the 75th minute.
But it was Coventry who looked the more dangerous side and indeed carried the greater threat in the latter stages.
The referee ruled Carl Baker’s free kick was tipped away by Carl Ikeme at full stretch on 76.
Coventry brought on Phillips – the son of former Wales and Sky Blues midfielder Dave Phillips – and it proved crucial.
Phillips grabbed a deserved equaliser with an angled low blast that found the bottom corner of the net giving Ikeme no chance.
Phillips then made a crucial block on the clean-through Sigurdarson in the third minute of time added on before the referee blew for full-time.
Wolves could have few complaints at the outcome of an even contest which saw them pushed all the way by a good footballing Coventry team.