Wanderers manager Gareth Ainsworth urged his squad to be switched on in games until the very end as they bid to end their 10-match winless run this weekend against high-flying Portsmouth.

The Blues have lost their last two games in injury-time despite taking the lead and deserving of at least a point in both encounters against Shrewsbury and Oxford.

The Oxford winner was a wonder strike by full-back Josh Ruffels and Ainsworth feels it is a lack of concentration that is costing his side points at the present time.

He said: "We saw against Oxford where we could be vulnerable and in training we are looking great and maybe it is a switching off at the end of games which is hurting us.

"It isn't fitness levels because we know we are fit bunch and we go until the end and we score goals at the end.

"The mental side of the game in League One, you just have to be much more switched on and these are tough things to work on.

"You can work all day on technique and passing and all the physical side of things but the mental side and the emotional side is very tough to work on.

"You have to get the right players in to do these things. I think we have a fantastic squad and there are some very good teams in the last few minutes in this league and we just have to up our game in those last moments.

"The boys are fantastic and any session we put on they want to learn and improve and I am sure what we have put in place this week will make them better."

Portsmouth come into this game on the back of a win at Wembley in the Checkatrade Trophy final against Sunderland and Ainsworth is relishing pitting his wits against Kenny Jackett and his side.

He added: "It is going to be a brilliant occasion but it is a game of football I want to win.

"It is great to have these teams coming here and I want to win. We have matched these big sides and we have the capabilities of matching and beating teams in our league.

"At this stage of the season, the games are into single figures and that is at the top and bottom. I have huge respect for Kenny and he was a big part in me being a player at QPR so with him and Joe Gallen in charge they will be a tough proposition but I don't see why we can't compete with them."