On Wednesday, Tosky and former PASA teammate Liv Jensen each swam the anchor leg for their respective teams. Jensen helped California Aquatics win the national title with a time of 3:44.87.
Tosky nearly overtook Jensen on the final leg, helping PASA finish second in the relay with a time of 3:44.92. Madeline Schaefer, Camille Cheng, and Ally Howe also swam for Palo Alto Stanford. The PASA 'B' team was 16th overall in 3:54.84.
Tosky also turned in a sharp effort in the 200 free, finishing sixth in a swift 1:58.63. She was faster, by three to four seconds, than three Stanford swimmers in the event: incoming freshman Andrea Taylor (18th in 2:01.07), Kate Dwelley (21st in 2:01.32) and Kelsey Ditto (22nd in 2:02.14).
In a pool full of Olympians and American champions, Tosky has more than held her own as she's climbed onto the lists of top performances of the season.
On Tuesday's opening day, Tosky recorded a personal best in the 200 IM (2:13.18) to finish tenth. She also swam under a minute for the first time ever in the 100 fly, finishing 12th in 59.56.
Tosky's IM mark was better than defending U.S. champion Julia Smit, a Stanford product and Olympian. Smit finished eighth in the championship final with a 2:14.01. Cardinal senior Elizabeth Smith followed right behind Tosky with a 2:15.18.
Stanford grad and Olympian Elaine Breeden wasn't able to keep up with Tosky in the fly either. Breeden finished 16th in 59.99. Cardinal senior Kate Dwelley won the 'C' final, finishing 17th overall, with a time of 59.97.
Incoming Stanford freshman Felicia Lee was also impressive in the 100 fly, finishing fifth in 58.44, moving her into the top 15 world ranking.
Also Wednesday, Schaefer swam a time of 1:03.43 in the 'C' final of the 100 back, finishing 24th overall. Stanford senior Liz Webb was 17th in 1:02.10.
On the men's side, Stanford junior Bobby Bollier finished fourth in the 200 fly, swimming a 1:57.37 in a race that saw Michael Phelps record his 49th career title, surpassing Tracy Caulkins as the swimmer with the most national titles.
Stanford's David Mosko was ninth in the 200 fly with a time of 1:58.21 while Stanford's Morgan Priestly was 18th in the 200 free, Phelps' record-tying 48th career win.
Stanford grad Randal Bal went 55.18 to finish eighth in the championship final. Cardinal grad Eugene Godsoe was third in the 'B' final with a 55.15.
Stanford junior Chad La Tourette recorded a fourth-place finish in the 400 free Tuesday, swimming a 3:48.76 and moving into the world's top 15 times. Mosko went 3:52.64 to finish seventh in the championship finale.
Stanford sophomore Curtis Lovelace swam to a sixth-place finish in the 100 breast with his time of 1:01.72.
Phelps' effort in the 200 free was the fastest time in the world this year, edging Ryan Lochte 1:45.61 to 1:45.78.
Phelps led the entire way, but Lochte drew to within a hundredth of a second at the 150 meter mark. The two then went stroke for stroke to the wall, with Phelps gaining the edge.
"Whenever I have a chance to race these guys, we're really able to bring the best out of each other," Phelps said.
Lochte's time was the second-fastest in the world this year.
Olympian Christine Magnuson and Lochte turned in the fastest times in the world this year in their respective events on Tuesday.
Magnuson won the first event on the first night of finals with a world-best 57.32 in the women's 100 fly. Lochte closed the session with a world-best 4:09.98 in the 400 IM.
This story contains 656 words.
Stories older than 90 days are available only to subscribing members. Please help sustain quality local journalism by becoming a subscribing member today.
If you are already a subscriber, please log in so you can continue to enjoy unlimited access to stories and archives. Subscriptions start at $5 per month and may be cancelled at any time.