Okert was transferred in late June after posting a 1.53 ERA in 35.1 innings while striking out 54.
Stratton, San Francisco's first-round pick in 2012 out of Mississippi State University, however, wasn't having the greatest season in Advanced-A ball, compiling a 5.07 ERA and 1.40 WHIP over 18 starts. But clearly organizational minds believed his talents were best served in Double-A.
Stratton, who was recently ranked the ninth best prospect in the farm system by MLB.com., had his best month in June, where he struck out 31 and walked eight in 24 innings, all while owning a 4.13 ERA.
The move comes on the heals of a more controversial promotion, that of Houston Astros top prospect Mark Appel, who despite a 9.74 ERA in 12 California League starts, was sent up a level to Corpus Christi.
Stratton might see more success in a pitcher friendly Eastern League, compared to the notorious hitter's paradise that is the Cal League. Though other Giants pitching prospects like Adalberto Mejia and Kyle Crick have shown that despite the league's bias towards pitchers, their numbers have not reflected that theory.
Stratton was previously scheduled to start Wednesday's game at Modesto for San Jose.