6-6, 260lb (198cm, 117kg)
March 22, 1985
in Kingston, Jamaica
Draft: Drafted by the Boston Red Sox in the 2nd round of the 2006 MLB June Amateur Draft from San Diego State University (San Diego, CA).
High School: Beavercreek HS (Beavercreek, OH)
Schools: Bethel College (Mishawaka, IN), San Diego State University (San Diego, CA)
April 24, 2008
16,894th in MLB history)
vs. LAA 6.0 IP, 2 H, 4 SO, 4 BB, 1 ER
August 9, 2015
vs. DET 1.0 IP, 1 H, 1 SO, 1 BB, 1 ER
Exceeded rookie limits during 2008 season
Agents: Randy Rowley
Full Name: Justin Daniel Masterson
Bat Masterson, Big Masty, Nasty Masty or Masty
Minor Lg Stats
Pitching Game Logs
Batting Game Logs
Fielding Game Logs
Pitching Finders & Advanced Stats
Batting Finders & Advanced Stats
Fielding Finders & Advanced Stats
More Justin Masterson Pages at Baseball Reference
Unleash the power of our game logs database by becoming a Stathead. Subscribers gain access to Player and Team Game Finders, which pros use to easily run customizable searches through over 100 years worth of game logs.
Become a Stathead
Justin Masterson Overview
Every Sports Reference Social Media Account
Site Last Updated: Wednesday, September 30, 11:05AM
Question, Comment, Feedback, or Correction?
Are you a Stathead, too? Subscribe to our Free Newsletter
This Month in Sports ReferenceFind out when we add a feature or make a change
Do you have a sports website? Or write about sports? We have tools and resources that can help you use sports data. Find out more.
All logos are the trademark & property of their owners and not Sports Reference LLC. We present them here for purely educational purposes.
Our reasoning for presenting offensive logos.
Logos were compiled by the amazing SportsLogos.net.
Copyright © 2000-2020 Sports Reference LLC. All rights reserved.
Much of the play-by-play, game results, and transaction information both shown and used to create certain data sets was obtained free of charge from and is copyrighted by RetroSheet.
Win Expectancy, Run Expectancy, and Leverage Index calculations provided by Tom Tango of InsideTheBook.com, and co-author of The Book: Playing the Percentages in Baseball.
Total Zone Rating and initial framework for Wins above Replacement calculations provided by Sean Smith.
Full-year historical Major League statistics provided by Pete Palmer and Gary Gillette of Hidden Game Sports.
Some defensive statistics Copyright © Baseball Info Solutions, 2010-2020.
Some high school data is courtesy David McWater.
Many historical player head shots courtesy of David Davis. Many thanks to him. All images are property the copyright holder and are displayed here for informational purposes only.