There has been a fresh call for temporary concussion substitutes from England's Professional Footballers' Association (PFA) after Leeds United were criticised for allowing Robin Koch back on to the pitch after sustaining a head injury.
Koch collided with Scott McTominay during the first half of Leeds' 4-2 defeat to Manchester United on Sunday, with the German requiring lengthy treatment.
The blow to the defender's head led to blood pouring down onto his face and requiring a significant amount of bandaging.
He was initially brought back on to the pitch but was then withdrawn 15 minutes later after sitting down on the pitch looking groggy, subsequently requiring support as he was guided off the field.
The Premier League introduced a trial of additional permanent concussion substitutions (APCS) in February last year, with regulations stating that "if there are clear symptoms of concussion, or the video provides clear evidence of concussion, the team will be permitted to apply to replace the player with an additional permanent concussion substitution."
Leeds did not use an APCS, and the fact Koch was later taken off looking unwell led to the club being widely criticised in the media and on social media.
The PFA believes the incident proves APCS – the trial of which was extended into this season – are not working and should be replaced with temporary substitutions to decrease the pressure on those involved to make quick, and potentially risky, decisions.
"The injury to Leeds United's Robin Koch demonstrates again that the current concussion protocols within football are failing to prioritise player safety," a statement read.
"The 'if in doubt, sit them out' protocol is not being applied consistently within the pressurised environment of elite competitive football.
"We see frequent incidents of players returning to play with a potential brain injury, only to be removed shortly afterwards once symptoms visibly worsen.
"As the representative voice of players in England, we have been clear to the IFAB [International Football Association Board] that we want to see the introduction of temporary concussion substitutes.
"Temporary concussion substitutes will allow medical teams additional time and an appropriate environment to make an initial assessment.
"Introducing temporary substitutes would allow a match to restart with neither side numerically disadvantaged, reducing pressure on players and medical teams to make quick decisions on whether an injured player continues.
"Put simply, the current rules set by the IFAB are not working, and players are being put at risk."
Al-Khaleej 0-1 Al-Nassr: Ronaldo misfires on return as Laporte nets winner
Cristiano Ronaldo returned from suspension but failed to find the net as Al-Nassr secured a 1-0 win over Al-Khaleej on Saturday, with Aymeric Laporte coming up with the decisive goal.
Ronaldo was in action for the first time since being sent off for an elbow in a 2-1 Saudi Super Cup loss to Al-Hilal earlier this month, with his initial two-match ban being reduced to one on appeal.
He missed three good chances as Al-Nassr threatened to fall further behind runaway Saudi Pro League leaders Al-Hilal, but former Manchester City defender Laporte spared his blushes by nodding Marcelo Brozovic's deep free-kick into the bottom-left corner with 68 minutes gone.
Al-Nassr remain nine points adrift of Al-Hilal at the summit in spite of their win, with Jorge Jesus' team unbeaten through 28 games this season as they close in on a record-extending 18th title.
Data Debrief: Ronaldo misfires on return
Ronaldo was presented with the Saudi Pro League's Player of the Month award for March ahead of kick-off, having scored four goals in three league appearances last month.
However, his sights were off on Saturday as he failed to net despite three of the visitors' four big chances, as defined by Opta, falling his way. He led all players on the pitch for expected goals (1.27 xG), shots (five), shots on target (three) and touches in the area (nine) without reward.
Huddersfield all but relegated from Championship while League Two play-off spots decided
Huddersfield Town saw their relegation from the Championship all but confirmed after a 1-1 draw with fellow strugglers Birmingham City on Saturday.
The Terriers avoided a defeat that would have seen them relegated on Saturday, but even a win on the final day over promotion hopefuls Ipswich Town will not be enough unless they overcome a huge goal difference of 15 goals with Plymouth Argyle.
Birmingham remain in the other relegation place and now must beat Norwich City to stand a chance of staying up with Sheffield Wednesday, Plymouth and Blackburn Rovers also still in danger.
At the other end of the table, the Canaries dropped points in a 2-2 draw with Swansea City, leaving the door open for Hull City, who face Ipswich Town later today.
Ten Hag bemoans late Burnley equaliser - 'It's so unnecessary'
Erik ten Hag was left frustrated as Manchester United "gave it away" against a spirited Burnley, who held them to a 1-1 draw at Old Trafford.
The Red Devils were on course to claim all three points when Antony pounced on Sander Berge's error to open the scoring in the 79th minute, as they looked to close the gap on fifth-place Tottenham to four points.
However, the hosts could not hold on as Andre Onana was penalised for a foul on Zeki Amdouni, who picked himself up to level from the penalty spot and salvage a point for the visitors three minutes from time.
Ten Hag was made to rue his side's wastefulness as they converted just one of their 27 shots on goal throughout the contest.
"We put ourselves in a winning position and, over long courses of the game, we dominated," he told the BBC. "We played some good football - creating loads of chances - and then to give it away in the end in the final minutes, it's so unnecessary.
"Every team gives up opportunities. But, when it is up to us, it is weird. We created loads of chances as well. We are one of the most dynamic and entertaining teams in the league at this moment. We are creating loads of chances by playing good football.
"We lost control in the second part of the first half when we conceded some chances, but the rest of the game was ours. We were in a winning position, and we gave it away."
Meanwhile, Vincent Kompany saluted the character demonstrated by Burnley, who boosted their Premier League survival hopes by moving to within two points of safety with three games remaining.
"We are where we are in the league for a reason, so not everything can be perfect, but the mentality was perfect - the togetherness, the sacrifice for each other," the Clarets boss said.
"There is tremendous consistency in the club and the approach to each game, even in tough times. We've earned the right to believe and hope."
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