Geraghty gathered the ball and was running laterally across the ground, away from the camera. Pearce came at him from the direction of the Australian goal, from Geraghty's right. It looks like he had momentum up because he appears out of the right hand side of the screen running at high speed. It also looks like he had Geraghty in his sights for quite a few paces before he reached him. Pearce's tackle was from the side rather than the back. His first contact was with his hands to Geraghty's right side. His contact caused the ball to come loose from Geraghty's grip although it looks like Pearce couldn't see the ball come loose because he slid across behind Geraghty's back, changed his grip to clasp Geraghty around the torso, both arms pinned and then used his momentum to sling Geraghty to the ground finishing up by falling over the upper body of Geraghty, his elbow across Geraghty's face. Whether there was malice or not is opinion only. The tackle was well organised. If he had been properly instructed in what is acceptable in International Rules, he had plenty of time to ensure that his tackle conformed. The sling was not only unneccessary but he should have been instructed and trained not to apply it. Either he wasn't instructed, in which case Sheedy and Stynes have plenty to answer for, or he was, in which case he has a lot to answer for. Then again, no penalty was awarded against him.
Maybe netball is more your style ..as men playing football seems to terrify you