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Current and Former Coaches

2024 John Marshall High School Coaching Staff

Tyler Zemla

Tyler Zemla

Varsity Head Coach

Jake French

Jake French

Varsity Assistant Coach

Aaron Hegrenes

Aaron Hegrenes

Volunteer Varsity Assistant Coach

Joe Baker

JV Head Coach

Matt Bitz

9th Grade Head Coach


2023 Summer Staff

Aaron Hegrenes

Legion Head Coach

Joe Baker

VFW Head Coach


Tyler Zemla

2022 - Current

The 2024t season will mark Coach Zemla's third season as the Head Varsity Head Coach (Overall Record of 12-33). He previously served one year as the Head JV Coach in 2021 and has experience as the Head Varsity Assistant Coach for three years at Oak Creek High School (WI), where he graduated from in 2010.

Coach Zemla played four years (2011-2014) as a pitcher at Winona State University and was a member of the NCAA Division II Championship Runner-Up team as a freshman there in 2011.

Coach Zemla currently resides in Pine Island with his wife, Jenna, and son, Brooks. He also works as a Biostatistician at Mayo Clinic.

Jade Boettcher

2017 - 2021

Coach Boettcher led the Rockets to an overall record of 37-54 in his 4 completed seasons as head coach. He led the team to a 3rd place finish in Sections during the 2019 season.

Terry "Dutch" Heiderscheit

2002-2016

Heiderscheit coached JM baseball for 14 seasons and took the Rockets to the state tournament in 2006 and 2008 and had a tremendous run with Big 9 Championships in 2006, 2008, 2009, 2011, 2012, 2013, and 2014.

Darrin Schmidt

1999 - 2001

Schmidt coached the JM varsity baseball team for three seasons and compiled a record of 44-32, including a 12-14 mark in 2001. 

Tom Everson

1987 - 1998 (Lions All-Star coach 1984)

Tom Everson, a Zumbrota High School and St. Olaf College graduate, was both a JM English teacher, coached baseball and football, and a boys athletics coordinator.  

Post Bulletin Article : Everson taught how to live, and to die

Lou Branca

1967 - 1986 (2007 MSHSL Coaches Hall of Fame)

Lou Branca graduated from South St. Paul High School in 1946 and from St. Cloud State in 1953. After graduating from high school Lou served two years in the U.S. Navy. Upon discharge he entered professional baseball in the St. Louis Cardinals organization as a pitcher and attended St. Thomas in the off-season. Upon his departure from professional baseball he transferred to St. Cloud State since he was ineligible to play baseball at St. Thomas due to his pro experience, but he was eligible at St. Cloud State. Upon graduating from St. Cloud State, Lou taught and coached for a year in Illinois and a year at Cleveland, Minnesota before moving to Faribault where he was an assistant coach until taking over as the head coach in 1962 for five years. Lou then moved to Rochester John Marshall where he was the head coach for 20 years, retiring after the 1986 season. Lou won a Big Nine championship at Faribault in 1964 and won three more Big Nine titles at John Marshall. Lou was Big Nine Coach of the Year three times and was honored with the Retired Coach of the Year Award by the Minnesota State High School Baseball Coaches Association. Lou was President of the Coaches Association in 1977.