Astros Minor League Roster Moves/Transactions

A few more moves around the Astros minor leagues today ~

OKLAHOMA CITY
RHP David Martinez optioned from Houston to Oklahoma City

QUAD CITIES
RHP Aaron Vaughn assigned from the GCL to Quad Cities
RHP Frederick Tiburcio assigned from Oklahoma City to Quad Cities

TRI-CITY
LHP Randall Fant assigned from the GCL to Tri-City

GCL
RHP John Gatlin assigned to the GCL (NDFA out of Ole Miss)