Darren Ferguson branded Tyrone Barnett's Peterborough debut as the best he has ever seen after the record signing grabbed a late equaliser in Saturday's 1-1 draw at Doncaster.
Barnett joined Posh on loan until the end of the season from Crawley this week and will complete a permanent move to London Road for a club-record fee of £1.1million in the summer.
And the big striker, who was working as a delivery driver just two years ago, showed why Ferguson pushed the boat out to sign him as his bullet header in the second minute of stoppage time kept Rovers rooted to the bottom of the Championship.
Giles Barnes' first goal since January 2009 looked to have given Rovers three precious points until Barnett came off the bench and nodded home a cross from centre-back Ryan Bennett, making his last appearance for Ferguson's side before joining Norwich.
Ferguson was not at all happy with his side's first-half display at the Keepmoat Stadium but was buoyed by Barnett's impressive debut after coming on early in the second half.
"We kept going and going and we just thought it was one of the days, but Benno (Ryan Bennett) has popped up and to be fair it was a good cross and Tyrone is there and I thought it was as a good a debut as I've seen," said Ferguson.
"He came on and caused them all sorts of problems. We don't have to change the way we play, the philosophy I'll never change, but I don't want him to change. We're going to have to adjust to him and not the other way around.
"He's only trained for two days with us but he definitely gives us a different outlet. I thought he was really, really good when he came on."
Ferguson felt his side were just about worthy of a point after Rovers had the better of the first half.
He added: "You have to get these hard earned points and any sort of points at the moment. It was hard earned as I thought it would be. I think maybe deserved for the last 30 minutes.
"I was disappointed with the first half, I thought we were going to see it through (until half-time), but unfortunately Barnes has scored late on in the first half. But second half we were far better. The players know themselves I won't accept that first half."
Rovers are now without a win in seven games in all competitions and six points behind Bristol City, who are just above the relegation zone, with two games in hand.
Dean Saunders' struggling side suffered a heartbreaking defeat at Leeds last weekend after conceding a late goal and there was yet more frustration today for the Welshman, who bemoaned his side's luck but also criticised their inability to see out the game.
The former Wrexham boss said: "It happens in football doesn't it, but obviously the whole dressing room is gutted. I thought we played really well first half, I think they had one shot. We're missing chances every week and we had chances to make it 2-0 and we didn't take them.
"Luck is just not with us at the minute, even with their goal David Button has touched it onto the post and it's gone along the line and into the other side of the net."