These football rules are complex, need to be learned, reviewed, tested Raymondo. Let's face it. If these lads weren't footballers, they'd be KwikFit fitters.
At least with Havertz's airborne tackle, the ball was kind of near him, or had just gone.
With Guimaraes, the ball was nowhere near him or his victim, he ran towards him, raised his arm and thumped him in the back of the head. Red card.