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Boys Coaches

Pat DeBolt: Hofstra University

Pat has 5 years of Division I coaching experience including a National Championship with the Duke Blue Devils. He has worked with some of the best players in the world and coached alongside the top coaches in the game including Coach Tierney from Hofstra University, Coach Myers from The Ohio State University and Coach Danowski from Duke University.
Coach DeBolt has extensive experience working with the top select lacrosse programs around the country and he is bringing his knowledge and expertise to Sentry.

  • Home Town: Waterloo (New York)
  • College Undergrad: D1- Hofstra University (Long Island New York)
  • NCAA College Coaching Experience: Duke University, Hofstra University, The Ohio State University.
  • High School Coaching Experience: Parish HS (TX) Flower Mound HS (TX)
  • Awards & Achievements:
  • 2010 National Champion with Duke University 
  • 2X CAA Champion with Hofstra University
  • 5 NCAA Appearances
  • 2013 State Championship with Flower Mound High School
  • 2013 Texas assistant coach of the year
  • 2014 Bob Patterson Award 
  • 2015 DFW Keeper of the Stick Award
  • First ever 3X selection for NY Empire State Games
  • Shutout Story: Click here to read why Pat DeBolt loves coaching lacrosse
Pat  DeBolt

Pat DeBolt


Phone: 315 719 8072

Joe Kostolansky: Hofstra University


  • High School: Corning East High School, Corning, NY 
  • College: Hofstra University, Hempstead, NY 

Major League Lacrosse Experience: 

  • San Francisco Dragons  *21 G, 8 A
  • Boston Cannons  (Major League Lacrosse) *21 G, 8 A
  • Rochester Rattlers (Major League Lacrosse) *21 G, 8 A

Coached NCAA Lacrosse Experience: 

  • Nazareth College
  • Skidmore College
  • University of Vermont


  • 2000 NCAA Tournament Team and America East Conference Champions; Leading Assists
  • 1999 NCAA Quarterfinalist Team
  • 1999 Hofstra University Play of the Year Award recipient
  • 2001 USA World Team Try Out Invitation
  • 2000 & 2003 1st team All-League Selection America East and Colonial Conference 1998 High School North/South All American Selection
  • 1998 NYS Section IV 1st Team All-League Selection and Section IV MVP
  • 1998 NYS Class “B” Semi-Finalist Team 20-1 record
  • 1998 All-State Football Selection
  • 1997 NYS Section IV 1st Team All-League Selection and Section IV MVP
  • 1997 NYS Class “B” Finalist Team 21-1 record
  • 1996 NYS Class “B” Finalist Team 22-1 record and All-League Selection 

Case Carpenter: University of North Carolina

College: University of North Carolina

  • National Champion in 2016
  • ACC Champion 2017 

High School: (Highland Park High School) 

  • 2x State Champion in Texas
  • listed by Inside Lacrosse as the #24 Rising Sophomore in 2012 and #21 Rising Junior in 2013
  • 1x Nike The Ride participant 
  • 1x Under Armour South All-America 
  • 1x Maverik Showtime All-Star
  • 2x Jake Reed Nike Camp participant 
  • 2x Baltimore Summer Kickoff All-Star Team 
  • 1x Adrenaline All-America roster
  • Student Council class representative from ninth through 11th grades
  • Student Council executive parliamentarian as a senior
  • chosen by Highland Park faculty to represent HP at Texas Boys’ State in Austin in 2014
  • Young Men’s Service League Member (Community Service)
  • Won Senior of Year Award for Community Service

Harley Brown: University of Denver

Coach Harley was raised in Connecticut where he was fortunate enough to play for some stellar programs which allowed for a successful recruiting process and the title of HS All-American. At Fairfield College Prep he helped the Jesuits win 3 State Championships, and later attended Deerfield Academy for a PG year to gain additional recruitment exposure. Afterward he played for Coach Tierney at the University of Denver to help the Pioneers attend one quarterfinal and two semifinal appearances. 

Harley has enjoyed refining his coaching methods across all age groups over the past 10 years. As he’s moved from state to state, different Summer clubs, school teams and individuals have rewarded him with their perseverance. Harley is especially thrilled to coach with Sentry Lax, and hopes to serve their community well.


High School: (Flower Mound,TX) 

  • 1x Texas State Champion Flower Mound Lacrosse
  • 1x All State Goalie
  • 1x Bob Patterson Award
  • 1x All District goalies


  • 2x Offensive player of the year Goals: 185 Assist: 67
  • 1x US Player of the month
  • 2x first team All-conference attack
  • 2x Conference MVP

Eric Parmelee: Guilford College

Eric is originally from New York where he grew up playing lacrosse at Brockport High School.  After high school, he played 4 years of college lacrosse at Guilford College. After graduation, he moved to the great state of Texas where he coached for Southlake HS and Frisco HS. Eric currently works in the finance industry locally in Dallas and will be coaching Sentry for the 2019-2020 season.

Michael Diener: Hofstra University

Coach Diener recently graduated from Hofstra University where he was a three year starter. During his time there, he had the opportunity to play under some of the best coaches in the game, with some of the best players in the game, each with a different style. For the past three years, he has been coaching select lacrosse in Long Island and developing players' knowledge and techniques to mold them into better lacrosse athletes. 

College: D1- Hofstra University

  • 3x CAA Tournament Appearances
  • 3x CAA Commissioner’s Academic Award Recipient
  • Nominated for the 2017 USILA/Nike North vs. South All-Star Game
  • Earned team ranking of #2 in the country as a senior

High School: Pine Crest School FL

  • 2x Team captain
  • 4x District champion
  • 2x Regional champion
  • Iron Panther Award for leadership and influence in the weight room

Available for private or group lessons, please call 561-281-8921 or email to arrange.

Michael Diener


Phone: 561-281-8921