Combat Zone Wrestling presents "Proving Grounds" held 5-14-11 in Philadelphia, PA
- Alex Colon vs. Rich Swann
- Ryan Eagles vs. Ty Hagen
- AKUMA vs. Jonathan Gresham
- Ryan McBride vs. Jake Crist
- Dog Collar Grudge Match: Drake Younger vs. Scotty Vortekz
- MASASA vs. Sami Callihan
- CZW World Ultraviolent Underground Title: Ryan Slater vs. Danny Havoc
- CZW World Hwt. Title: Robert Anthony vs. Devon Moore
- CZW World Tag Titles: The Briscoe Bros. vs. Open Challenge
- CZW World Jr. Hwt. Title: AR Fox vs. Adam Cole
