It's true, they don't fight that often (training bouts don't count, because then it's all about technique and not about making your opponent admit they're in the wrong, and even if he can hear dad somewhere in the background yelling out advice on the proper technique, the optimum hold or the best place to connect with to send a man sprawling it's a different matter entirely). Maybe because they're both too damn good at it – it's not a case of flailing at each other for a while before giving up, the way most fights would be. There's tactics, and the fact they actually know what they're doing beyond just hitting each other. He lets the shove send him back a pace or two, almost stumble, before coming back in on a slightly different trajectory – Sam's height gives him too much of an advantage at arm's length, so it's much better to get in close where gangly-ness will make his accuracy suffer and rain in as many blows as possible from there – slamming one elbow upwards to try and pin his brother at the throat while the other hand concentrates on getting a good solid punch in on the ribs or guts.