As far as I know, Estrada is a manager only, and is NOT trained for in-ring physicality.
Edit: I have been corrected. Apparently Estrada CAN wrestle. I thought I remembered reading at some point that we wasn't a trained wrestler and was a manager only.
He's a trained wrestler, but supposedly not a good one.
Put him and Umaga as a tag team then. They could have a good dynamic as a tag team.