All effective prehab and rehab programs for recreational and competitive athletes should include single leg stability exercises.  I like to use sliding exercises as one way to improve neuromuscular control of the core, hip and knee.  Frontal plane collapse is a common issue with respect to knee dysfunction.  Using sliders/gliding discs as well as theraband is an excellent way to improve strength and kinetic chain control.  Below is an exercise i recently featured for Personal Fitness Professional:

This exercise is effective in injury prevention and rehab programs for those with ankle instability, anterior knee pain, hip weakness, poor landing mechanics and higher ACL risk if playing pivoting and cutting sports.  It will improve core stability, hip and knee strength/stability, dynamic balance, groin flexibility and trunk control.

The band serves to enhance activation of the hip external rotators and further challenge stability of the hip and knee.  The band should not pull too forcefully, but just enough to cue the desired muscle activation pattern.  A slower cadence on the eccentric portion of the exercise is preferable to maximize stability and strength gains.  Do not force through any painful ranges of motion, and remember that form and alignment are paramount so limit the reaching based on the client’s ability to maintain adequate control.