Freshman (2014-15): Appeared in 12 singles matches splitting time between the fourth, fifth, and sixth singles positions... Went 7-10 overall in doubles play... With partner Mateusz Izycki, Koster went 6-8 including 5-7 in #2 Doubles and 1-1 in #3 Doubles... With TJ Meyers, the tandem went 1-2 in #3 Doubles.

Prior to LSSU: Was a four year letter winner  in tennis at Allegan High School.

Personal: Son of Michelle and Chris Koster... 2014 graduate of Allegan High School... Brother Kyle was a four year letter winner in tennis at LSSU from 2010-14...