There wasn't much Steve could have done to make this more frustrating. Tony knew he hadn't won yet; Cap didn't go down that easily, not ever. He rocked back, making some animalistic noise in his throat, his fist twisted in the collar of Steve's shirt again to haul him up and slam him back into the ground, like Tony could encourage some fight back into him. When that didn't work, the noise became an impotent groan of frustration that Tony was now less aware of than the noise of the crowd murmuring behind him and that security he knew he hired trying to keep them under control and out of the range of attack. His knuckles dug against Steve's collar bone when Tony leaned his weight against him instead, the other hand splayed on his chest. What was he supposed to do with this? What had he been doing?