Paul Warne could not contain his delight after watching his Derby side complete a comfortable 3-0 League One win at 10-man Leyton Orient, their first victory at Brisbane Road since the 1964-65 season.

The Rams had gone ahead in the first half with a sublime strike from Louie Sibley before Orient defender Brandon Cooper was sent off for elbowing James Collins.

After the interval, Nathaniel Mendez-Laing and substitute Tom Barkhuizen netted one apiece to earn the visitors their fifth-successive league win as they moved up a spot to fifth.

“Obviously I’m very pleased,” Warne said. “We’re in it to win games of course and it’s good to see the lads in good fettle.

“They are good friends on and off the pitch and I think the team plays better when you have that in the dressing room. We have real confidence and you need that to win games and I thought we were handsome for the win.

“It was a really good day at the office. We could have played better in parts of the game but it’s all about winning so when you come away from home and keep a clean sheet and win then I don’t think you can have too many complaints as a manager.

“I liked the fact we won the game, scored three goals and created lots of chances.

“Our third one was a counter-attack from their corner and I enjoyed seeing six of my players running like the wind to get on the end of it. We were pretty solid and energetic but to be successful we need to be striving to the next level.

Orient coach Matt Harrold reflected: “I thought that we started the game great and things happened in the first 10 minutes which we worked on in training where we were on the front foot and everything was OK.

“But then they score a goal – probably against the run of play – and at the minute things are going against us and so it’s kind of where we are at the moment.

“Last week we were poor at Chesterfield but I thought we put on a good performance today but we’re giving ourselves a mountain to climb by conceding a goal and then losing a player to a red card which has a big bearing on the result.

“At two-nil down, we score one but have it ruled out for offside and then Derby score a third where we just not good enough and it’s those details against good teams where we have to be much, much better.”

Harrold had no complaints about the dismissal of Cooper.

“At the time I wasn’t sure as my view was the other side but having watched our red card again, I don’t think we can have any complaints and it doesn’t look good on the video,” he admitted.

George Moncur’s 90th-minute strike gave Leyton Orient a 2-1 win over Reading at Brisbane Road.

Jordan Brown’s opener was cancelled out by the visitors’ Tyler Bindon but Moncur settled the issue in the final minute of normal time.

Joe Pigott was twice denied early opportunities to open the scoring as his powerful header crashed against the crossbar and then David Button went at full-stretch to save his shot.

Orient were rewarded for their persistent pressure when Brown completed a five-man move by slamming an unstoppable 20-yard shot past Button for the opening goal after 26 minutes.

At the opposite end, Lewis Wing had an effort spilled by O’s keeper Sol Brynn but they levelled on 35 minutes when Ballard headed against the upright but Bindon rolled the ball into the net.

Both keepers were kept busy after the break with Brynn denying Harvey Knibbs and Wing while Button thwarted Ed Turns and Theo Archibald.

But the Reading keeper missed a corner late on and Moncur was first to the ball in a goalmouth scramble to give Orient the points.

A man has died after being taken unwell towards the end of Leyton Orient and Lincoln’s abandoned Sky Bet League One match at Brisbane Road, the London Ambulance Service has confirmed.

A fan ran on the pitch towards referee Stephen Martin to draw attention to the fact that a member of the public needed medical attention in the East Stand.

The match then continued for less than a minute before around 20 supporters sat down on the pitch at the home end to alert the referee to the continuing medical emergency, with play soon halted.

As paramedics appeared to give the man CPR on the side of the pitch, the referee took the teams off the field.

The match was abandoned an hour after the initial stoppage occurred and as the fans left the ground, the medical teams were still in attendance.

A London Ambulance Service spokesperson confirmed on Wednesday the man had later been pronounced dead.

“We were called yesterday at 9:28pm to reports of a person becoming unwell at Leyton Orient Football Club, on Brisbane Road,” a London Ambulance Service spokesperson said in a statement.

“We sent a number of resources to the scene, including an incident response officer, two medics in fast-response cars and an ambulance crew. Our first medic arrived in approximately four minutes.

“We treated a man at the scene, but very sadly, despite our teams’ best efforts, he was later pronounced dead.”

Leyton Orient were leading 1-0 when the game was stopped, through an early goal from Joe Pigott.

The English Football League will determine whether the fixture will be rescheduled, or if the result at the time of the abandonment will stand. The decision will be taken only after consultation with both clubs.

Guidance is in place for clubs if a supporter becomes unwell in a stadium, with local circumstances determining the action taken.

It is strongly advised the nearest steward is made aware, who will ensure that the crowd medical team is notified and that appropriate care is provided.

Then should a situation arise where there is a need for the match to be halted, a decision will be taken between the crowd medical team, the ground safety team and the match officials, with the information relayed to the supporters at the ground. The EFL will also be informed at this point.

All clubs have a matchday medical plan with dedicated crowd medical teams in the stadium, ready to assist at any point during the match.

Leyton Orient issued a statement on Tuesday evening following the decision to abandoned the game.

“The thoughts of everyone at Leyton Orient Football Club are with the individual involved and their loved ones at this distressing time,” the statement read.

“The club would like to thank all supporters in attendance at Brisbane Road this evening for the understanding and compassion shown, during a very difficult situation.

“The club will provide a further update in due course.”