Historically speaking, one of the most important Pitchers in Latin America is Dennis Martinez, and he was also one of the most tenured.

Eddie Rommel played his entire 13-year playing career with the Philadelphia Athletics (1920-32), where he became one of the first masters of the knuckleball.

Rudy York was known mostly for his time with the Detroit Tigers, and it was there where he had his greatest success.

Prior to winning the World Series MVP in 1972, you could argue that Gene Tenace was one of its most unlikely recipients.  The Catcher made his first appearance in the Majors in 1969 for Oakland, but he was mostly a backup.  Late in the ’72 season, Tenace was promoted to a starter, and he belted four Home Runs in World Series.