Umpire Matthew Heersema
Has umpired for 2nd (Highest), 26th (Lowest), 13th (Average)
Conferences by Annual Ranking.
Worked in front of 32,511 Fans.
Officiated Conferences (including non-conference assignments):
2014
Big 12 (1 games)
WCC (4 games)
2015
Big West (3 games)
WCC (9 games)
2016
WCC (5 games)
2017
ACC (1 games)
Big West (5 games)
MWC (3 games)
Pac-12 (1 games)
SEC (1 games)
WAC (3 games)
WCC (3 games)
2018
Big West (11 games)
MWC (4 games)
WAC (3 games)
WCC (3 games)
2019
Big West (10 games)
WAC (6 games)
WCC (10 games)
2020
Big Ten (1 games)
CCAA (5 games)
MWC (4 games)
Pac-12 (1 games)
WCC (4 games)
Teams Umpired (47 Teams):
| Arizona | Baylor | Butler |
| BYU | Cal Poly | Cal St. Dom. Hills |
| Cal St. San B'dino | Cal St. San Marcos | California |
| California Baptist | Chicago St. | Creighton |
| CSU Bakersfield | CSUN | Fresno St. |
| Hawaii | Holy Cross | LMU (CA) |
| Long Beach St. | Loyola Marymount | Michigan St. |
| Nebraska | Nevada | New Mexico |
| New Mexico St. | Notre Dame | Oregon |
| Pacific | Pepperdine | Saint Mary's (CA) |
| San Diego | San Diego St. | San Francisco |
| San Jose St. | Seattle U | Seton Hall |
| Southern California | Tennessee | Texas A&M |
| UC Irvine | UC Riverside | UC San Diego |
| UC Santa Barbara | UCLA | UNLV |
| Utah Valley | UTRGV |