Portsmouth assistant Jon Harley is not focused on promotion despite a 3-1 victory at Wycombe moving the Sky Bet League One leaders closer to the Championship.

Pompey moved 11 points clear of third-placed Bolton following a stylish performance at Adams Park, in which top scorer Colby Bishop scored twice to make it 18 goals for the season.

Eight points from their remaining six games are required for Pompey to seal their return to the second tier after a 12-year absence, with a top-of-the-table clash with Derby to come on Tuesday night.

Harley, in charge on the touchline due to John Mousinho’s ban, said: “I don’t think that (promotion) is something we really want to talk about too much.

“As boring as it sounds, we’ve got a massive game against Derby coming up, so we just focus on that.

“I think if we focus on one game at a time, then the rest will take care of itself.

“Obviously, there is that going on in the back of our minds, we just want to get there as soon as we can and Derby becomes our next focus.

“The gaffer came down at half-time and had a few words and the key message, really, was let’s show some more energy.

“We knew it was going to be a fight in the second half and everyone stood up to it.

“The energy really rose and I think the game got wrapped up and in the last 20 minutes we felt really comfortable.”

Portsmouth led after three minutes when Bishop’s shot went in via a big deflection off Ryan Tafazolli, but Wycombe quickly levelled through Matt Butcher’s assured finish.

Bishop then doubled his tally after 28 minutes by steering in Abu Kamara’s low cross before Christian Saydee made sure of victory midway through the second half.

Wycombe boss Matt Bloomfield said: “I felt we weren’t at our best, but we’ve gone pretty close.

“We had a couple of chances when we were 2-1 down – we hit the bar and had another couple of moments and if one of those goes in at 2-2, I really fancy us at home to have a good last half an hour.

“Unfortunately, it wasn’t to be and we had a bit of a sucker punch to go 3-1 down, which took the wind out of our sails a little bit.

“Portsmouth are at the top of the league for a reason.

“They’ve got some good players in forward areas who can hurt you at any moment and in Colby Bishop I think you’ll do well to find a better nine in the league.

“They’ve got some real good players and they’re a benchmark of where we want to get to.”

Wycombe boss Matt Bloomfield hailed January signing Matt Butcher’s brilliance after his second-half brace sealed a 2-0 win over Northampton.

Butcher’s double – his first goals for the club – also completed a hat-trick of victories for Wycombe, although he waited until the 69th minute to break the deadlock.

Bloomfield insists the win is a wider reflection on Wycombe’s positive direction, though he remained fully focused on Sky Bet League One despite the fact they have a Wembley final against Peterborough next month.

He said: “As soon as I heard a whisper he (Butcher) was available I knew we had to get him.

“He’s been fantastic since coming to the football club and exactly what we needed.

“There’s been a lot of exciting news lately. There’s been too much talk of Wembley for my liking because I want to focus on these league games.

“The board have been amazing in their support and the hard work behind the scenes to provide better times ahead for this football club.

“I always felt our performances weren’t far away and now the work the boys have put in all season is being rewarded with wins.

“It was a stop-start first half, but in the second we found a spark and fresh energy.

“The boys that came on off the bench did that for us and that’s their job.

“I’m really pleased with the performance and the result. We’ve started to get the results that our performances have deserved.”

In contrast, one win in seven games makes for poor reading in the latter part of Northampton’s season.

Boss Jon Brady insisted he does not want the defeat to signal an end to his side’s campaign as their dismal recent form leaves little to fight for.

He said: “I said to the boys I think it’s a mindset. I don’t want the season to drift, I want to finish strong.

“The game was scrappy. You come to Wycombe and you know you’ll have to battle and fight.

“I thought there was nothing in the game until the first goal and it was a very soft goal, as was the second.

“We come away very frustrated on the day.

“The second one was looped into the back corner and it should be saved, but there you go.

“We had little half chances, but not much more than that. The differences are in both boxes. We shouldn’t concede those two goals.

“Even if we aren’t scoring at the other end, we should come out of that game 0-0.

“We got ourselves in a good position, but we need to be better and get our edge.

“I feel that we’ve lost our edge in our mindset and our play as well.”

Matt Butcher bagged a brace as Wycombe made it a hat-trick of league wins with a 2-0 victory over Northampton.

The mid-table clash looked destined to peter out into a dour draw before Butcher lit up Adams Park with his first and second league goals for the club.

Home goalkeeper Franco Ravizzoli was the first to be tested as he kept out Tony Springett’s effort low to his left.

Louie Moulden denied Freddie Potts a goal to savour from 25 yards after Gideon Kodua headed the ball into his path.

After the break, Dale Taylor was denied by the visiting keeper.

But the deadlock was broken in the 69th minute as Kieran Sadlier took a quick throw to Butcher, who drove into the box and fired into the far corner.

Down the other end, Ravizzoli kept out Kieron Bowie one-on-one.

Butcher’s second was even better as he curled home a fine strike, after being found by Sadlier again, with five minutes to go.