base umpire

n.

垒审；

A Microcomputer-Based Decision Support System for Scheduling Umpires in the American Baseball League
The match demands of Australian rules football umpires in a state-based competition.
Development of a valid and reliable video-based decision-making test for Australian football umpires
Branch-and-bound with decomposition-based lower bounds for the Traveling Umpire Problem
Decomposition and local search based methods for the traveling umpire problem
Judgment Bias in Baseball Umpires' First Base Calls: A Computer Simulation
Normative Rules among Umpires: The "Phantom Tag"at Second Base
Cultivation of Tennis Umpire Based on the 4C Skills
Video-based training to improve umpire decision-making
Physical Fitness of Rugby Umpires Based on Prudential Fitnessgram®