Staff

Ryan Beier

Ryan Beier

Head Coach

Beier has been the head coach at O’Gorman High School for the past 20 years, with a career varsity record of 179-52-39. and six state championship teams. In 2017, he was a finalist for National Coach of the Year.
He was the SF Thunder Assistant Coach in 2017 and 2018 and has been a DASC club coach throughout the past 23 years. In that time, he coached seven state champion/regional qualifying teams. Beier also coached the University of Sioux Falls men for 2 years in 98 and 99. He graduated from and played soccer at the University of Sioux Falls.
Coach Beier currently teaches Health and PE at OGJH, He and his wife Jessica have 3 kids, Evan (16), Mareth (13), and CJ (9).

Daniel Haggerty

Daniel Haggerty

Team Owner

Haggerty found his passion for soccer at Goshen College in Indiana, where he played for four years and earned an NAIA honorable mention. Haggerty has nineteen years of coaching experience at the high school level. He coached for eight years in Ohio and eleven in South Dakota. He now looks to expand his knowledge of the game to management of the Thunder.
Dan and his wife Heather work at Dan Haggerty Insurance Agency Inc. They have four children, Ryan Brennan, Gavin, and Praba.

Gary Glissendorf

Gary Glissendorf

Assistant Coach

Glissendorf has coached for the Sioux Falls area youth club, Dakota Alliance Soccer Club, for twelve years. He has coached multiple age groups and has also coached at O'Gormon High School for the last six years.

Jack Fehrenz

Jack Fehrenz

Goalie Coach

The Sioux Falls Thunder would like to welcome Jack Fehrenz to the 2022 coaching staff. Jack joins as the Thunder's new goalkeeping coach, bringing a wealth of experience to the staff. Outside the Thunder, Jack is the VP and COO of Noetz Glove Company, the official goalkeeping glove partner of the Thunder.

Victor Naranjo

Victor Naranjo

Assistant Coach

Victor Naranjo is a lifelong soccer player from Barcelona, Spain. He played for his high school team and, while in college, played for Ace Sansur F.C. in the Catalonian Federation of Soccer. He came to Sioux Falls in 2016 where he has coached both DASC and Soccer Sprouts. Victor currently teaches Kindergarten in the Sioux Falls School District and is the Jefferson High School boys soccer assistant coach.