How can I perform a one arm dumbbell row without using a bench?

To perform a one arm dumbbell row without using a bench, stand with your feet shoulder-width apart, bend your knees slightly, and hinge at your hips. Hold a dumbbell in one hand, keep your back straight, and pull the dumbbell towards your hip, squeezing your shoulder blade. Lower the dumbbell back down with control. Repeat for desired reps, then switch sides.