A graduate of
Medill School of Journalism,
Glenn began his career in Baseball with the
Rochester Red Wings
before calling games for
the San Diego Padres,
the Boston Red Sox and
the Miami Marlins.
Glenn has taught
Sports Broadcasting at
Florida Atlantic University
His popular play-by-play course is believed to be the first of its kind in the state of Florida and is one of only a handful of classes of its kind taught collegiately nationwide.
Throughout his career, Glenn has mentored countless aspiring broadcasters in high school, college and in the early stages of their professional careers.
He's worked especially closely with students at his alma mater, Northwestern University, and at Cornell University, where he serves on the Advisory Board
of the student-run
Big Red Sports Network.
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 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 Florida (now Miami) Marlins. He partnered with 2011 Ford C. Frick Award 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 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 and Rookie of the Year seasons.
In addition to 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 and David Ortiz as well as future Hall of Famer Ichiro Suzuki and future Hall of Fame managers Bruce Bochy and Terry Francona.
Since 2021, Glenn has taught Sports Broadcasting at Florida Atlantic University, and, 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.