Glenn Geffner is a veteran of more than 30 years in the industry, having broadcast in the Major Leagues for the San Diego Padres, the Boston Red Sox and, from 2008 through 2022, the Miami Marlins.
Upon graduating from Northwestern University’s Medill School of Journalism in 1990, Glenn began his Baseball career first as an unpaid intern and later as Director of Communications and radio voice of the Rochester Red Wings of the Triple-A International League.
In 1996, Glenn was named Director of Public Relations of the San Diego Padres and oversaw PR during the team’s 1998 National League championship season, before eventually transitioning into a full-time broadcasting role. In San Diego, he shared a booth with 2005 Ford C. Frick Award winner Jerry Coleman and Padres Hall of Famer Ted Leitner while also occasionally filling in on Padres television broadcasts and serving as a host and reporter for the Padres Report TV show.
In 2003, he joined the Boston Red Sox. In five seasons at Fenway Park, Glenn served as Vice President of Communications and, later, as a Red Sox radio broadcaster. He oversaw PR during the Red Sox’ historic 2004 World Series championship season and was on the air with 2024 Ford C. Frick Award recipient Joe Castiglione when the Red Sox again won the World Series in 2007. Glenn called Red Sox minor league games on television for the New England Sports Network (NESN) and hosted and reported for NESN's Red Sox Report.
In 2008, Glenn returned to his native South Florida to serve as a radio voice of the Miami Marlins. He partnered with 2011 Ford C. FrickAward winner Dave Van Horne for more than a decade before working with a rotation of analysts during his final years as the radio Voice of the Marlins. He also hosted a weekly Marlins Hot Stove radio show for nearly a decade and, during Covid, co-hosted the popular YouTube show/podcast Sev & Geff Live with Marlins television broadcaster Paul Severino.
In addition to being on the mic for the Red Sox' 2007 World Series championship season, Glenn has called countless Major League Baseball milestone moments such as Roy Halladay’s perfect game in 2010 (one of 6 no-hit games he’s broadcast), Ichiro Suzuki’s 3,000th hit in 2016 as well as several MVP, Cy Young, Rookie of the Year and Manager of the Year seasons.
On top of partnering in the broadcast booth with 3 Hall of Famers over the years, he has also worked with--and learned from--Hall of Famers Tony Gwynn, Trevor Hoffman, Rickey Henderson, Pedro Martinez, David Ortiz and Ichiro Suzuki as well as future Hall of Fame managers Bruce Bochy and Terry Francona and future Hall of Fame executive Theo Epstein.
In 2021, while still broadcasting major league games, Glenn began to transition into academia at Florida Atlantic University's School of Communication and Multi-Media Studies. At FAU, he taught a variety of Sports Broadcasting and Sports Media History courses. He joined the faculty of the University of Florida's College of Journalism and Communications in 2025, teaching both a Play-by-Play course as well as Sports Media and Society.
Glenn was appointed to the faculty of Marquette University’s Diederich College of Communication in the fall of 2026. At Marquette, he will teach a variety of Sports Communications courses--including Sports Broadcasting and Sports PR/Promotion--as well as launch a student play-by-play program.
Throughout his career, he has served as an active mentor to hundreds of aspiring broadcasters in high school, college and in the early stages of their professional careers.
Students and mentees with whom Glenn has worked have gone on to work in the NFL, NBA, MLB, NHL, major college sports and in Minor League Baseball.
He's also hosted and produced the Crooked Numbers baseball history podcast, written a pair of Major League Baseball Substacks and called college baseball games for ACC Network Extra.
