when YOur Opponent is TRying to Single Leg you Or Drag you down from the clinch you pop your arm under the armpit and the back of your hand to his chest it will reverse them if the take you down heres a video
[ame="http://www.youtube.com/watch?v=7tupNRoVxj0&feature=related"]YouTube- Whizzer to counter throw[/ame]
[ame="http://www.youtube.com/watch?v=dEt162f-ZAc&feature=related"]YouTube- Seacoast MMA Catch Wrestling basic whizzer[/ame]

But be aware and Get Good at The Whizzer Crank Down all you do is if they have a whizzer in lock you hands around the top of his Shoulder \and Crank Down like your Shucking him down