Town were dominant in the first half, with Harry Cornick nodding in after 15 minutes, but the introduction of Grady Diangana proved decisive as the man on loan from West Ham netted twice for the visitors in three second half minutes to win the game.

Jones said: “Slav threw on a bit of power and changed the game, I think that summarised what happened.

“Maybe the performance on Tuesday night, his first 90 in a while caught up with Harry Cornick. He has been used as a sub here and I don’t really see him like that, he’s a real threat.

“I thought physically we didn’t come out at half-time as I liked, as I would have liked. But obviously that’s part of the period that we’re in and we need to think about the positive aspect – that we dominated the ball for the first 45 minutes and went in at half-time 1-0 up.

“We spoke at half-time about all the things we wanted to do, and we dropped and gave West Brom the ball with space. West Brom didn’t score two goals today, we gave them two goals, they didn’t earn two goals in terms of our starting position as a team and that’s where the disappointment is.

“There’s 50 per cent of me really delighted and 50 per cent of me bothered by some moments in the second half and that’s my job to go away and analyse it, give direction and make sure we improve. I didn’t think for one moment that wouldn’t be the situation early in the season, so we are still taking strides to compete at this level. First half was great, but second half we need to be better.”