Football star Josh Oluwayemi is going viral for all the wrong reasons after his mind-boggling mistake helped condemn his A-League side to a 5-0 hammering – and prompted his coach to resign straight after the match.

Wellington Phoenix manager Giancarlo Italiano fell on his sword in his post-match press conference after the thrashing at the hands of Auckland FC at Sky Stadium on Saturday.

Italiano’s exit came after a derby drubbing which was headlined by a comical own goal from Oluwayemi that led to him being substituted at halftime.

Oluwayemi’s 24th-minute howler looks destined to be a permanent feature on goalkeeper gaffe compilations after the Phoenix No.1 completely misjudged a Jake Girdwood-Reich clearance at Sky Stadium in Wellington on Saturday.

Approximately 75 metres out from Wellington’s goal, Girdwood-Reich cleared a ball downfield and caught Oluwayemi out of his box.

Whether the wind played a part or not, the No.1 misjudged the flight of the ball and was forced to backpedal before heading it into his own net.

Wellington Phoenix goalie Josh Oluwayemi (bottom right) has gone viral after he made a mind-boggling mistake in his side’s 5-0 loss to Auckland on Saturday

Oluwayemi is pictured seconds after his awful own goal, which came after an Auckland player launched the ball 75 metres away from the goal

Phoenix manager Giancarlo Italiano (pictured) quit his job effective immediately straight after the match

He was also caught in no-man’s land for Jesse Randall’s second as Auckland raced out to a 4-0 halftime lead, prompting Italiano to take Oluwayemi off for Alby Kelly-Heald.

The Australian coach has spent the last seven years in the New Zealand capital, having previously served as Ufuk Talay’s assistant before getting the top gig for the 2023-24 season.

Italiano took the Phoenix to a second-place finish in his first campaign in charge.

Wellington slumped to 11th last season and currently sit 10th, having failed to win in their last five games.

‘To lose 5-0 at home with the season still to play for is unacceptable, I take full responsibility,’ Italiano said.

‘I’ve told the club, I’ve tendered my resignation.

‘I think it’s easier for someone to come in with new energy and refocus the group.

‘Even today, irrespective [of] if Josh made some errors in goals, it was me that picked him so that falls on me.

Oluwayemi (pictured) was hooked at halftime after making another mistake that led to a goal

Italiano (pictured) was furious after the final whistle, revealing ‘I lost my s**t’ with the team during the halftime break

‘(At halftime) I went in, I lost my s**t. I told everyone that was unacceptable and I just simply said to them at halftime, “You’re playing for the badge”.

‘The boys battled but the game was already gone.’

The Phoenix have also lost all six derbies against Auckland, all of which have come under Italiano’s watch.

‘I’m not a big fan of the club, Auckland, I don’t like the way they do things, but you can’t lose to rivals like that,’ Italiano said.

‘It’s unacceptable anywhere in the world. If Sampdoria play Genoa tomorrow and lose 5-0, I’d want the coach out.

‘It’s unacceptable and it’s in the interest of the club they bring someone in with a bit more energy.’

Italiano said he was looking forward to enjoying some sleep now he was out of a job.

Wellington, meanwhile, face Talay’s Sydney FC at home next Sunday.