Eleven swimmers swam in Santa Clara last weekend, while Maria Polyakova shined in Azerbaijan.
Ciara Monahan placed fifth in the 1-Meter event to qualify for August's Senior Nationals.
Annika Lenz, Ciara Monahan and Maria Polyakova are all taking part in summer competition.
The Pac-12 Newcomer of the Year competed in the 3-Meter event.
Campbell matched her 11th-place finish at the 2014 10K event.