Seven Trojans have singles rankings, along with four ranked doubles pairs at the close of the fall.
Arizona places three members in the ITA SIngles Rankings.
SoCal native will join the USC program for the next 2020-21 season.
Trojan pair wins USC's sixth title of the fall.
He'll also pair up with teammate Bradley Frye in the doubles semis at Marks Stadium.
Jackson and Frye are also through to the double quarters tomorrow at Marks Stadium.