Maddisen Bieber, an assistant for the past three seasons, has been named interim head coach of the Muhlenberg softball team for the 2026-27 academic year.

She replaces Sarah Leavenworth, who left Muhlenberg after seven seasons to take another coaching position.

"I'm incredibly grateful for the opportunity to step into this role," said Bieber. "Over the past three years, I've learned so much from Sarah, both as a coach and as a leader. I'm excited to build on those experiences, continue growing alongside this program, and help cultivate a championship-level team."

"After seven seasons and a historic 2026 season, Sarah Leavenworth is leaving a lasting legacy as Muhlenberg's head coach. We wish her nothing but success in her next chapter," said Lynn Tubman, executive director of athletics. "As we transition into the 2026–27 season, we couldn't be more excited for Maddisen Bieber to take the helm as interim head coach. Maddi has been a proven leader in our program for the past three years, and she is fully prepared to build upon our strong foundation and lead our student-athletes forward."

Bieber was part of a unit that was named Centennial Conference coaching staff of the year and National Fastpitch Coaches Association Region V coaching staff of the year in 2026 after leading the Mules to one of the best seasons by any team in the College's athletic history.

Muhlenberg finished the 2026 campaign with a 36-13, setting a school record for wins in a season by any sport. The Mules received an at-large bid to the NCAA Tournament and won a regional for the first time in program history, going 3-0 against two nationally ranked teams.

In the super regional at Trine, Muhlenberg pushed the defending Division III national champions to the brink, winning the first game of the best-of-three series and taking the decisive third game to the 11th inning before falling. Trine went on to reach the Division III championship series. 

Bieber coached third base and was responsible for giving the signals for stolen bases and bunts for an exciting offense that hit .342 and averaged more than five runs per game. She helped the Mules steal 140 bases, shattering the previous school record of 107. Muhlenberg led the CC and ranked 26th in Division III in stolen bases per game. 

Bieber played collegiately at nationally prominent Moravian University, where she was a standout infielder, compiling a .365 career batting average with five home runs and 80 RBI. She was the 2019 Landmark Conference player of the year after ranking 15th in Division III with a .487 batting average. Bieber earned all-region honors at shortstop that year and at third base in 2021. She also was named to the Academic All-District team as a senior in 2022.

Bieber graduated from Moravian in 2022 with a bachelor's degree in sports management and spent the 2023 season as an assistant coach at Elizabethtown College.