Neil Harris says Preston should have reduced to 10 men and Lee Gregory was denied a perfectly legal goal as The Lions were held at The Den.

Ben Pearson had already been booked when he fouled Jed Wallace midway through the second-half and the Millwall boss thought it was a certain red card.

The hosts took the lead two minutes before the break through Aiden O’Brien and Lee Gregory thought had had doubled Millwall’s lead, but was flagged offside, much to Harris’ frustration.

Harris said: “I thought there was two very fine calls today, both that should have gone in our favour. Firstly, young Pearson should have been sent off, because it’s identical to Jake Cooper’s red card, second-yellow at Sheffield Wednesday and if you look back at YouTube or whatever you want to look at, identical decision, there is cover round the ball, but he stops our player progressing up the pitch. I don’t understand that one.

“Secondly, Gregory scores, through one-on-one and is clearly three yards onside and I have watched it back from two different angles from both our camera’s and is clearly onside, so two fine margin decisions at 1-0 can affect the outcome of the game went against us today.”

Callum Robinson levelled for with 11 minutes remaining, but despite their late equaliser, Harris said it was one point gained rather two points dropped.

The Lions sit seven points above the relegation-zone and are have now gone six games unbeaten at The Den, their best Championship home-run since December 2013.

Harris continued: “It’s a good point. When you’re 1-0 up at home, at half-time you’re disappointed not to get three, naturally. Against a good side, competitive side, aggressive side, in the way they press and the way they play and a team that are going to be in and around the top-six come the end of the season, all-in-all it’s a good point.

“It was very similar to up at their place. Two teams that work extremely hard. You’re not going to find many more hard-working teams in the division than Millwall and Preston.”