Stop a forward turning. Travel with the striker as he checks in, arrive under control, get tight and side-on between him and the goal, and force him to play backwards instead of forwards.
A server plays into a striker who checks in with his back to goal, with a defender marking. The defender travels with the striker, slows down as he arrives, and gets tight and side-on to deny the turn. The striker tries to roll him both ways; if he cannot turn, he plays back to the server. Rotate all three roles and vary how early the striker checks in.
Forcing a forward to play backwards is a win that looks like nothing happened. No tackle, no interception, no clearance, just a ball going back the way it came. It is one of the most valuable individual defensive acts in football, it is almost never praised, and those two facts are related.
The work happens before the ball arrives. A defender who waits to see where the striker checks to is flat-footed by the time he gets there, so the instruction is to travel with him as he comes short. That means moving on the striker's movement rather than on the pass, which feels far too early and is not.
Arriving is the technical part. Slow down two yards out, get side-on with the goal behind you, and be close enough to feel him. Square-on means he can spin either way and you are guessing. Side-on means you can move in both directions without turning your hips first, and turning your hips is exactly the half second a good forward is playing for.
Now the honest trade-off, because it is where this drill earns its place. Getting tight enough to prevent the turn is also getting tight enough to be spun. A forward with a decent first touch will invite the contact and roll around a defender who has committed his weight forward. Tight is not the same as leaning, and a defender resting his hands and chest on the striker is already off balance.
Against a forward who genuinely cannot be stopped from turning, dropping off and showing him sideways is the better answer. Coach both, and let players choose.
Save it to your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block. Or start from a blank pitch and build your own.