Joel Raymond Johnston
- Bats Right, Throws Right
- Height 6' 4", Weight 220 lb.
- School Pennsylvania State University
- High School Marple Newtown High School
- Debut September 5, 1991
- Final Game May 12, 1995
- Born March 8, 1967 in West Chester, PA USA
According to Baseball America, in 1992 Johnston was the Royals' top prospect, and was also number 59 on its Top 100 Prospects list. However, after his promising rookie season, Johnston entered a "sophomore slump" he never really escaped. The closest he ever got to his incredible rookie season was in 1993, when he had an ERA of 3.38. In the other three seasons he pitched (he only pitched in a total of 13 games in 1992, 1994 and 1995 combined), his ERAs were respectively 13.50, 29.70 and 11.25.
Johnston currently resides in Pottstown, Pennsylvania.