Johns Hopkins University Men's Lacrosse

The Milliman File Personal Hometown Gaithersburg, MD Education Empire State '12 (Bachelor's) Children Reese,

In his second season as a member of head coach Peter Milliman's staff - and first as an assistant coach - is Chayse Ierlan, who was named the program's Director of Operations on June 28, 2024 before being promoted to assistant coach on August 11, 2025. In his new role, Ierlan works closely with Milliman directing the Blue Jay offense while also lending his expertise to the Blue Jay goalies. In 2026, Ierlan will have the opportunity to guide an experienced, yet still young, group of offensive players while helping guide a deep and talented group of Blue Jay goalies. As the Director of Operations, Ierlan coordinated all team travel, managed the team's extensive video operation, arranged all recruiting visits and served as a liaison between the program and all internal and external constituents. He also worked closely with the Department of Athletics administration on budget operations and other day-to-day activities associated with the program. In 2024, Ierlan capped a standout college career that included one season at Johns Hopkins (2024) and four years at Cornell (2020-23). He posted a 9.53 goals against average and .564 save percentage while helping lead the Blue Jays to the NCAA Quarterfinals in 2024. Ierlan ranked seventh in the nation in goals against average and eighth in save percentage; his 199 saves were the most by a Blue Jay goalie since 2008 and the second-most by a Johns Hopkins goalie this century. Ierlan was a four-year starter in goal at Cornell and appeared i

The Koesterer File Personal Hometown Cazenovia NY Education Johns Hopkins '07 (Bachelor's) Professional 2024-Present Johns

Updated:  January 8, 2026 First Day at Johns Hopkins: August 3, 2020 Jon Cohen was named an assistant coach at Johns Hopkins on June 28, 2024 after spending