KNOXVILLE, Tenn. -- Four national titles, two national records and six school records added up to a whole lot of smiles for the Ephs as Williams College had one of its best nights in coach Steve Kuster's 12-year tenure.

Sophomore Caroline Wilson and junior Logan Todhunter continued their dominance at the national level, each adding another national title to their resume at the 2011 NCAA Division III Women's Swimming and Diving Championships at the University of Tennessee's Allan Jones Aquatic Center.

Both also broke their own national records in the process, Wilson with her final swim in the 400 IM and Todhunter with her morning swim in the 100 fly.

Wilson got the night started in grand fashion with her time of 4:23.90 in the 400 IM, not only winning the national title, but breaking her own national record by nearly two full seconds.

The Ephs also received great performances from Bonnie Patchen, who was fourth in a time of 4:26.94, and Katherne O'Leary, who placed 11th in a time of 4:27.71.

Then it was off to the 100 fly, where in the morning preliminary swim, Todhunter had smashed her own national record time with a new mark of 52.84. She was the championship final in the evening with a time of 53.84.

"I think she probably was disappointed with her night swim, but when you're swimming as fast as she is, sometimes winning isn't enough," Kuster said. "It was her seventh consecutive national title, so she had a lot to be proud of."

Kathryn Ha finished 17th in the 100 fly in a time of 56.87. In the 200 free, Jillian Hancock finished 18th in 1:52.70.

The 400 medley relay of Stephanie Nguyen, Wilson, Todhunter and Carolyn Geller capped the evening with a second-place finish with a school record time, shaving nearly four seconds off that mark. Earlier, the 200 free relay team of Todhunter, Erin Altenberger, Olivia Card-Childers and Geller placed third with a school record time of 133.85.

Williams finished the second day of the championships in third place with 207 points, trailing second-place Denison by 18 points. Emory leads with 320 points.