The San Diego Thunder next team practice will be on Wednesday, August 19, 2015 from 7:30 pm - 10:00 pm @ the SportsPlex USA in Santee, CA. The address: 9951 Riverwalk Dr, Santee, CA. 92071. The practice field is located in the rear of the SportsPlex. "The San Diego Thunder is a different organization this year, but the tempo will be a lot faster." The San Diego Thunder won their "Season Opener" against visiting So Cal Gladiator 13 - 8.