USSSA Player Eligibility Question


Addicted to Softballfans
We are an USSSA E team. I have someone who wants to pick up with us when he can for tournaments. He is on the official roster for another team who just got moved up to D by the Area Director. That team while they were in E won a berth to World. Right now with his job and working on some Saturdays, he can't commit to playing with them all the time and they play some out of state tournaments. My question is am I allowed to pick up this guy for a tournament? I tried to give as much info as I knew.