Sheffield United boss Chris Wilder was unhappy with the first of John Egan's yellow cards as the defender was dismissed in defeat at Newcastle.
The Blades suffered their biggest defeat of the season as they capitulated following Egan's sending off on 50 minutes, with Newcastle winning 3-0.
Allan Saint-Maximin scored just five minutes after the red card following an error from Enda Stevens, with Matt Ritchie doubling the lead and Joelinton scoring just his second league goal of the season to wrap things up.
Speaking after the game, Wilder questioned the decision to show Egan a yellow card in the first half following an altercation with Joelinton, which also saw the Brazil striker cautioned.
"I'm so glad that I'm not playing in today's game if you're getting booked for that," Wilder said. "Just two boys going head to head. He obviously produced two yellow cards and it is easier for the centre-forward than the centre-half. The second one, I have no complaints with. I've got to pick the players up, I didn't like the feeling when we went two down."
Magpies boss Steve Bruce agreed with his counterpart concerning referee David Coote's decision to book Egan and Joelinton.
"(The first yellow) was a little bit (of) handbags," he said. "I don't think either of them deserved a yellow card but I can understand how Chris must feel. The second one was a yellow, it could have been a red maybe. The big decisions in big games, you need them to go for you."
Bruce hopes Joelinton is finally finding his feet after seeing him score his second Premier League goal 301 days after the first.
The 23-year-old Brazilian rounded off the win at St James' Park with a solid 78th-minute finish after passing up a glorious opportunity in the first half, the kind of miss which has earned the £40million summer signing concerted criticism.
Bruce said: "When somebody wants to achieve something and wants to do well, we all want him to do well, staff, players, everybody around.
"He's a really genuinely good lad and he gives his all for the team, so once you keep doing that and you're a team player like he is, then you're going to get the respect of everybody.
"We're all just delighted for him that he's managed to score a goal and hopefully, hopefully, hopefully - that's now two or three he's got over the last few weeks.
"He personally has suffered in the lockdown more than anybody. He's had no family here, no friends, so it's been really, really difficult for the kid, so I'm delighted for him."