Meet the IRT Team

The men’s professional International Racquetball Tour (IRT) team members are led by IRT President, Jason Mannino, and Chairman of the Board, Eric Muller, who helps to make major decisions, develops long-term strategy, and builds material relationships along with Mannino, who also focuses on the day-to-day. In addition to the people listed below, the IRT Team includes the countless volunteers, supporters, fans, partners, tournament directors and staff who bring the best racquetball in the world to clubs across North America and into our homes via the IRT Network.

Company Contact Information

International Racquetball Tour

39252 Winchester Road #107-413

Murrieta, CA 92563-3510


Jason Mannino
IRT President
When doctors told Jason he’d never walk again after a nearly fatal car accident, the 18-year-old came back, not only walking but becoming one of the best racquetball players to ever play the game. The 2003 #1 World Champion, U.S. Pro Nationals Champion, and two-time U.S. Open Champion also holds 22 career tournament victories. He retired from competition in April 2010 to accept the position of IRT President (, bringing his competitive focus, drive, and determination to business, also as a Managing Board Member of Victory MMA and Fitness Center and co-author of Championship Racquetball plus the Building Your Racquetball Dream House camp and DVD series.
Eric Muller
Chairman of the Board
Eric is a former professional player and U.S. National Team member. As a Managing Director at Goldman, Sachs & Co., Eric helps oversee $100 billion of private equity capital managed on behalf of the firm and its clients.
Jen Sinclair Johnson
Director of Communications
With a communications degree from the University of Illinois at Urbana-Champaign, Jen worked in financial marketing and commercial lending until pursuing freelance writing for newspapers, magazines, and as a gardening columnist. After discovering racquetball at her local YMCA, she quickly became a certified instructor, racquetball director, and tournament regular. She’s now overseeing the IRT’s marketing and communications while finalizing her first novel: a mystery set within the quirky community of her favorite sport.
Steve Kowalski 
IT Consultant
Steve began his career in nuclear engineering, developing computer-based education and training programs for college and the industry before moving into human resources. Nearly twenty years ago he started working for 20/10 Solutions, an internet development design and marketing firm for electronic and printed materials, where he now serves as VP of Internet Development.   
Shari Coplen

Director of Public Relations

Shari applies the same attention to detail to the IRT as she employed during twenty years in the health care industry that saw her rise to Director of Business Development. The 2008 MO Racquetball Association President, engineer of the Missouri Racquetball Hall of Fame, and Tier 1 Tournament Director supports other event leaders with public and community relations for top-tier tournaments by addressing pro player needs and serving as a liaison between the community, host city, and the IRT. Call her at (314) 420-2903 for assistance with Grand Slam or Tier 1 events.
Mark Vinciguerra

Director of Media Outreach

A former collegiate racquetball player (Syracuse University/SUNY Oswego), Mark Vinciguerra now oversees media outreach for the IRT.  In his position, Vinciguerra works closely with the IRT promotions and marketing team and deals directly with media outlets to obtain coverage of IRT tournaments and events.  The Tour and its players/events have been featured in a variety of television, radio stations, newspapers, and websites—including a NY Times story on IRT pro, Kane Waselenchuck.  Vinciguerra is the Publisher/General Manager of Columbia-Greene Media in upstate NY, and resides in the Albany area with his wife Kathleen and two children—Jessica and Christopher.
Eric Mueller

Media Manager

Eric Mueller served on the 2014 UnitedHealthcare US OPEN Media Team, and with a degree in journalism from the University of Minnesota-Twin Cities, Mueller brings experience in sports reporting, marketing, and public relations for organizations like the Pioneer Press, St. Paul Saints professional baseball team, Gopher Sports Marketing at the University of Minnesota, and the 2015 Cowles Cup Champion Chicago Bandits professional softball team.