Illinois women's tennis head coach Evan Clark announced the addition of Kasia Treiber to the Fighting Illini staff as a volunteer assistant coach in the fall of 2025. The 2025-26 season marks Treiber's first campaign on staff. She was a four-year letterwinner at Illinois, playing the entirely of her career under Clark. 

Across her Illinois career, Treiber had a 46-34 record in doubles play and a 64-47 record in singles play from from 2021-25. In her junior year, she recorded a team high of 18 single wins, she closed the season on a six-match win streak. As a senior, Treiber posted a 10-2 record in Big Ten play on the doubles courts, bringing her career record in conference doubles action to 22-7. Over her final two seasons, Treiber clinched 10 dual matches for the Fighting Illini. 

For her work in the classroom, Trieber earned both Academic All-Big Ten and CSC Academic All-District recognition twice and was a four-time ITA Scholar-Athlete honoree. She was also a two-time Big Ten Sportsmanship Award honoree. During her junior campaign, Treiber garnered a Big Ten Athlete of the Week honor.

A native of Hinsdale, Illinois, Treiber attended Hinsdale Central High School. She graduated with a bachelor's degree in accountancy from Illinois in 2025 and is currently working towards a master's degree.

Last updated September 2025