According to Baseball Reference there have been 1,891 different players who got into a major league game as a Cincinnati Red/Red Stocking/Redleg as of the end of the 2014 season. So I threw them all into a randomizer and off we go.
Get To Know... Eldred "Bud" Byerly
Born: October 26, 1920, Webster Groves, Missouri
Signed: 1940, by the Cardinals
Reds Debut: 1950, acquired via free agency
Reds Stats: 3 seasons at RP/SP, 56 games, 3 starts, 105.1 IP, 47 K, 3.59 ERA, 2-3 record
Final Major League Season: 1960, with the Giants
Grew up less than 20 minutes from the Cardinals' ball park, who would sign him to his first big league contract at age 19.
Pitched a perfect inning and a third for the Cards during the 1944 World Series victory.
Number of cards: 10
Number of cards as a Red: 3 (The card above, its gray back variation, and its 1983 reprint)
Number of cards in my collection: 1 (33%)