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.”

John Mousinho hailed a player he dropped for helping Portsmouth take another big step towards the Championship with a 1-0 win at Peterborough.

The Pompey chief left out two-goal midweek hero Kusini Yengi for a crunch clash at promotion rivals Peterborough.

But the Australian ace responded by climbing off the bench to grab the only goal that kept Portsmouth five points clear at the summit.

Yengi, sent on after Christian Saydee limped off in the first half, raced on to a pass from fellow substitute Gavin Whyte in the 77th minute to fire past Posh keeper Jed Steer.

Peterborough still look bound for the play-offs despite their five-match winning streak coming to an end.

Top-scorer Ephron Mason-Clark blasted against the bar midway through the first half as they drew a blank for just the third time all season in League One.

“I really feel for him,” said Mousinho about match-winner Yengi. “It wasn’t an easy decision to leave him out.

“He scored twice on Tuesday night and his overall performance was really good.

“He has been excellent whenever he has played and his goalscoring record is superb.

“It could have been a difficult one to take, but he was really professional about it when told yesterday. He trained really well in the afternoon, stayed positive around the place and thoroughly deserved his goal.

“At this stage of the season it is all about winning games, but it was a really good performance from us as well.

“The fans made it a special day. That was probably the best away atmosphere I’ve ever experienced.

“To be able to win the game and put in that performance was superb. It was pure relief at the final whistle.

“We’ve just got to keep our heads down and keep winning as many games as possible.”

Posh boss Darren Ferguson said: “I’m really disappointed with the result, but really proud of the performance.

“We were by far the better team on the day and they’re really lucky to come away with a win.

“If anyone from Portsmouth says otherwise, they are kidding themselves.

“We controlled large parts of the game. Some of the play was fantastic.

“But football can be a cruel game and we just couldn’t get that first goal.

“You always need that bit of luck in big games, but we didn’t have it when Ephron hit the underside of the bar.

“I’m gutted for the players as they didn’t deserve to lose the game. You’d rather win and have a bad performance like on Wednesday.

“But if we play like that in the last eight games, we’ll be fine. I’ve still got a lot of confidence that we’re in a good place.

“The break has come at a good time to freshen up for a last push.”

Portsmouth manager John Mousinho was delighted with the League One leaders’ helter-skelter 2-1 win at home to Oxford.

Christian Saydee came off the bench to score the goal that fired Pompey a step closer to promotion after Cameron Brannagan’s penalty had cancelled out Callum Lang’s opener for the home side.

Mousinho said: “You could describe that as a pretty breathtaking display from both sides. It was an enjoyable game to watch and with both teams pressing, it created openings for us and them.

“I think it was a good advert for Division One football and I personally think Oxford would be feeling a little hard done by not to go away with at least a point.

“It was probably not our best performance of the season but after what has historically been draws between the sides, it was nice to get the win.

“We started well with the goal but then shot ourselves in the foot for their penalty.

“We seemed to feel a bit sorry for ourselves after that until half-time and we were in fact slow starters at the start of the second half.

“But once we got the second, I felt we were in control from that point on.”

In a fast and furious opening 45 minutes, the sides went in all square.

Pompey took the lead in the second minute when a powerful shot from Lang squirmed under goalkeeper Jamie Cumming.

But Oxford equalised after six minutes when Pompey gave the ball away and Sean Raggett brought down ex-Pompey midfielder Owen Dale for a penalty which was easily converted by Brannagan.

Mark Harris then hit the Pompey post on 13 minutes.

Oxford had the first chance of the second half but Josh Murphy was also denied by the woodwork.

Pompey regained the lead after 67 minutes when Saydee held off a strong challenge to run clear and place the ball wide of Cumming.

Oxford pushed for an equaliser but to no avail.

Oxford boss Des Buckingham said: “I think that’s our best performance since taking the reins. But that’s the frustrating thing because we have come away with nothing.

“We’ve done more than enough to have won the game. We’ve hit the post twice and have had opportunities cleared off the line in the second half.

“We did enough to have won a couple of games out there today. If we can perform for the next 10 games like we did today, I will be extremely happy.

“Although frustrating, we have to approach the next game in the same way we did for this game and if we do that we will position ourselves strongly for that.”

Substitute Christian Saydee’s first league goal of the season saw leaders Portsmouth win 2-1 against Oxford at Fratton Park to move a step closer to promotion.

In a fast and furious opening 45 minutes, the sides went in all square.

Pompey took the lead in the second minute when a powerful shot from Callum Lang squirmed under goalkeeper Jamie Cumming.

But Oxford equalised after six minutes when Pompey gave the ball away and Sean Raggett brought down ex-Pompey midfielder Owen Dale for a penalty which was easily converted by Cameron Brannagan.

Mark Harris then hit the Pompey post on 13 minutes.

Oxford had the first chance of the second half but Josh Murphy was also denied by the woodwork.

Pompey regained the lead after 67 minutes when Saydee held off a strong challenge to run clear and place the ball wide of Cumming.

Oxford pushed for an equaliser but to no avail.