Kathryn DeLillio is in her second season as an assistant coach on the Tufts women’s lacrosse team. Last spring she was a part of the coaching staff which guided the team to a 13-5 record, the most wins the program has seen since 2009. They also made it to the second round of the NCAA Championship for the first time since 2015. Tufts finished the 2018 season ranked 13th in the Intercollegiate Women's Lacrosse Coaches Association (IWLCA) poll.
DeLillio came to Medford in 2017 after graduating from Trinity College, where she majored in history and played lacrosse for all four years.
A four-year starter on defense for the Bantams, DeLillio picked up 100 groundballs and caused 51 turnovers over her career. While she was a member of the team, Trinity had a 76-14 record, won two NESCAC Championships, made it to at least the NCAA semifinal all four years, and advanced to the NCAA Championship Game three times. As a junior, DeLillio was named to the IWLCA Division III All-Berkshire Region second team. During the 2014-2015 season, she was a member of Trinity's Student-Athlete Advisory Committee (SAAC).
Before Trinity, DeLillio attended Tower Hill High School in Wilmington, Delaware. She was a three-time all-conference selection and All-State as a senior.