Colby Mefford also won the 500 free, tearing to a 4:21.56 for a new personal best.
Junior Anicka Delgado was a double winner for Santa Margarita.
Ristic posted a season best 1:45.87 for the top time in the 200 free by nearly a second.
Juniors Ella Ristic (above) and Anna Delgado give Santa Margarita their best chance at repeating as CIF-SS Division I Champions.
Matthew Dieffenthaller of Saint Petersburg Aquatics has committed to swim for the Penn Quakers beginning in the fall.
Tuggle finished first the 500 and third in the 200 IM as Michael Andrew won the 100 fly and 200 IM Friday.
Kevin Tu from Santa Margarita Catholic High School and Irvine Novaquatics has announced his verbal commitment to the Penn Quakers for 2019-20.
Mark McCrary of Pasadena, California has verbally committed to the application process at Penn.
Katinka Hosszu is racing at the 2018 LA Invite this weekend, and told SwimSwam that she is training at USC until Euros in August.
Santa Margarita senior and Harvard commit Samantha Shelton tackled a 200 free/200 IM double, with the front end of that producing a lifetime best swim.
Irvine Novaquatics won the Star League Championship this weekend, taking down fellow SoCal club powerhouses Rose Bowl and Canyons.