Baseball Abbreviations and Acronyms

1. IRS
   Inherited Runners Scored
2. IS
   Ichiro Suzuki
3. IS
   Illegal Substitution
4. IW
   Intentional Walks
5. JA
   Jorge Alfaro
6. JA
   Jose Abreu
7. JA
   Jose Altuve
8. JA
   Josh Anderson
9. JABO
   Just A Bit Outmide
10. JB
    Jackie Bradley
11. JB
    Javier Baez
12. JB
    Justin Bour
13. JBJ
    Jackie Bradley Jr
14. JC
    Jerry Coleman
15. JC
    Jharel Cotton
16. JC
    Jack Cust
17. JC
    Jarred Cosart
18. JC
    Jeimer Candelario
19. JDA
    Joint Drug Agreement
20. JE
    Jacoby Ellsbury

Last updated: May 2, 2025 — Total entries: 914