Welcome
Marathon Ump Publishing.
We provide Baseball education on both the rules and the history of the Great Game.
Baseball Who Am I? Series.
Hall of Famer Editon
Identify and answer trivia questions on 130 of the greatest to ever play the Great Game.
Games and Puzzles include:
- Hangman
- Cross Word Puzzles
- Word Search
- Multiple Choice
- On-line Trivia Contest matching you against other fans.
Who Am I? - Hall of Fame Trivia Cards
Baseball Hall of Fame Trivia Cards! These trading cards feature exciting trivia questions about the sport's greatest stars.
This complete set consists of 128 of baseball's all-time heroes.
Baseball Who Am I? Series.
Texas Rangers Edition
Identify and answer trivia questions on 156 players and managers from the history of the Texas Rangers.
Games and Puzzles include:
- Hangman
- Cross Word Puzzles
- Word Search
- Multiple Choice
- On-line Trivia Contest matching you against other fans.
2025 Official Baseball Rules Expanded Study Guide.
Covers all sections of the MLB rule book for both "making the call" and "recording the call".
Each Chapter comes with:
- Summary of Key Points (Game Day Notes)
- Exam Questions (Game Day Action)
- Answers and Explanations for Exam Questions (Post Game Analysis)
MLB Rules Knowledge Assessment
Exam is 25 random questions from all sections of the major league rule book. At the end of the exam, you will see your score for each section and the correct answers for each question viewed.
Texas Ranger - Who Am I
Test your knowledge of the history of the Texas Rangers.
Click below to play.
Online Hall of Famer Quiz
Identify and answer trivia questions on the greatest of the great - Major League Baseball Hall of Famers.
Lets go to the game !!!
MLBshop.com
Shop our unmatched selection of MLB gear available now at MLBshop.com
Hey MLB fans!! Don't miss out on official gear from MLB Shop.
About Marathon Ump
Troy Ray Grimes (aka "Marathon Ump") is a baseball umpire and endurance athlete.
He currently works as an umpire for the Texas Rangers Youth Academy.
He has completed over 60 marathons/ultra-marathons including running 58 miles for his 58th birthday at the Bowling Green Hot Rods baseball ballpark.
Texas Rangers Youth Academy
Marathon Ump is proud to be a youth league umpire at the Texas Rangers Youth Academy’s RBI (Reviving Baseball in Inner Cities) league.