Mazzoni completed his ninth year as pitching coach for Sacred Heart in 2015, helping the Pioneers to their seventh consecutive appearance in the Northeast Conference Championship Game as well as third conference title in the past five seasons.
A 1991 graduate of Gettysburg College, Mazzoni spent six seasons as the head baseball coach and assistant athletic director at Post University in Waterbury. Prior to that, Mazzoni was the pitching coach at Fairfield University and also served as an assistant at Nova Southeastern University in Florida. Ahead of coming to Sacred Heart, he had most recently served as pitching coach at the College of Holy Cross.
Mazzoni, who earned a master's degree in Sports Marketing from St. Thomas University, is also an established author and speaker. He has published articles in the ABCA Coaching Digest, NCAA News, Scholastic Coach, Baseball Digest, and Junior Baseball. He is the author of The Athletic Recruiting and Scholarship Guide, which helps high school athletes and parents with the recruiting process and is a frequent speaker at high schools regarding that topic. In addition, he was a recruiting speaker at the 2005 World Baseball Coaches Convention. He has appeared on ABC, Fox, and most sports radio stations around the country. He has a pitching video titled The Left-Handed Pick Off Move, which he presented at the national ABCA Convention in 2004. He also is part-owner of Shea 22 with Tim Shea, Head Baseball Coach at Southern Connecticut State University.
A native of Northport, Long Island, Mazzoni and his wife Keli have two children, Colby and Brayden, and a black Lab puppy named Moxie.
- Two of his pitchers drafed during his time at SHU. In 2007, Jason Monti was selected in the 25th round, while in 2014, Kody Kerski was taken in the eighth round.
- Nine Pioneer pitchers have been All-Northeast Conference selecitons during his tenure.
- In 2011, Nick Leiningen was named the NEC Rookie of the Year.