Dennis Dale Lewallyn
- Bats Right, Throws Right
- Height 6' 4", Weight 200 lb.
- School Chipola Junior College
- High School Escambia High School
- Debut September 21, 1975
- Final Game April 27, 1982
- Born August 11, 1953 in Pensacola, FL USA
Lewallyn was the classic minor league star who could not stick in the major leagues. He spent six seasons with the Los Angeles Dodgers affiliate, the Albuquerque Dukes, winning 74 games for them from 1975-1980. The Dodgers of the time were a strong team, and he could not find a permanent spot on the pitching staff.
Ted Power was a teammate of Lewallyn in Albuquerque in 1979 and 1980, and like Lewallyn was to pitch several years in Albuquerque while struggling to find a spot on the Dodgers roster. Unlike Lewallyn, though, Power eventually broke through and had a long career in the majors.
After five brief appearances with the Dodgers, Lewallyn came up once with the Texas Rangers and twice with the Cleveland Indians. Lifetime, in his 8 seasons in the majors, he pitched 80 2/3 innings, with an ERA of 4.48. He also pitched for the Tigres del Licey in the Dominican League at least one season.
After retiring, Lewallyn was a pitching coach in the Los Angeles Dodgers organization for thirteen years.
He joined the Arizona Diamondbacks minor league organization when the franchise was formed through expansion. He was pitching coach for the Lethbridge Black Diamonds in 1996 and the South Bend Silver Hawks in 1997. He was the pitching coach for the High Desert Mavericks in 1998 and the El Paso Diablos in 1999-2001. Next he was the minor league pitching coordinator for the D-Backs.