GSBS Staff

Our GSBS Basketball Staff is dedicated to building each player’s confidence and self-esteem as well developing each player’s individual skills and team skills in a positive and enriching environment, Since 1994 GSBS Basketball have reached over 125,000 boys & girls from 5 to 18 years old. GSBS Basketball has given players of all skill level an opportunity to work on their game and become part of a basketball program that truly cares about each player’s well being. 

George Shimko: Owner 

Kristen Shimko: Director of Player Development

Kara Shimko: Director of Digital Marketing

Jarret Gmazel: Director of GSBS Boys’ Club teams: Grade school & High school players
GSBS Staff member: 6 years
GSBS Alum: Played 2011-2016 
High School: Lincoln-Way Central – 4 year player – All-Conference 2015 & 2016
College: Joliet Junior College – NJCAA All-American
College: University of Saint Francis-Joliet, IL  – Helped team win first NAIA National Tournament game
Occupation: Lincoln-Way Central High School English teacher for Special Services & Head Boys’ Freshman coach Lincoln-Way West High School.
Coach Gmazel’s goal for our GSBS program: Help young athletes develop the necessary skills to compete and have fun playing basketball.

Chris Hauser: Director of GSBS and our Oak Lawn Park District Based Programs
GSBS Staff member: 16 years
High School: Oak Lawn Community High School 
College: Moraine Valley Community College – Associate’s Business Degree
Coaching: Coached over 600 GSBS Boys & Girls grade school & high school games
Occupation: AllState Senior Auto Claims Adjuster
Married: 28 years with three (3) children
Coach Hauser’s goal for our GSBS program: Teach young boys & girls to fall in love with the game of basketball and show them that with hard work anything is possible.

Dallas Haywood: Director of GSBS Girls Club teams: Grade school & High school players 

Ahmad Jarad: Club coach

Eden Ortiz:  Club Coach

Melanie Ortiz: Club coach

Chris Pardek: Club coach for Grade School and High School Teams
GSBS Staff member: 11 years
High School: Lake Central High School – St, John, IN
College: Purdue University – BA in Physical Education
Occupation: Liberty Junior High PE Teacher & Head Basketball Coach
Coach Pardek’s goal for our GSBS program: Players to learn how to work hard, develop good habits while having fun learning the game of basketball


Please contact GSBS Basketball with any questions you may have:
George Shimko – GSBS Basketball  Phone: 815-814-4151  Email:

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