Guastelle is in his 21st year as a member of the Sacred Heart University athletic department. He currently holds the position of Senior Associate Athletic Director/Operations as well as Director of Tennis/Head Women's Tennis Coach.
Prior to being named Senior Associate AD, Guastelle served as Director of Athletic Communications from 1994-2000, as well as Head Men's Tennis Coach from 1994-2005.
Guastelle holds a bachelor's degree in Sports Management, as well as a master's degree in Athletic Administration from Springfield College. He resides in Fairfield with his wife Karen and son Jake.
- 1997 New England Collegiate Conference Women’s Tennis Coach of the Year
- Led men’s program to the finals of 2004 Northeast Conference Tennis Championships
- Led women’s program to first New England Intercollegiate Championship in 2005
- Coached 18 All-Conference Selections
- Women’s team has earned ITA Division I All-Academic Team Honors in 12 of the last 13 years