Donruss misspelled his name, baseball-reference.com lists him as Randy, no wonder I couldn't find any information on him for awhile.
Randell Byers was drafted in 1982 by the Blue Jaysin the 22nd round, in 1983 in the primary phase of the draft in the 1st round by the Tigers, by the Red Sox in the 1st round of the secondary phase of the draft but didn't sign with any of them. The Padres drafted him in the first round of the secondary phase of the 1984 draft. He made his major league debut with the Padres on September 7, 1987 against the Braves. He played in 21 games over two seasons with the Padres, with a .269 batting average. He was traded to the Cardinals during the 1989 season for Jeremy Hernandez, but never appeared in a game for them.
I got the card signed through the mail a couple of years ago.
Hollywood bit players on baseball cards: Part 3
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