The first professional baseball game I attended was played on August 16, 1964 in Shea Stadium's first season. Galen Cisco (not a Hall of Famer), in a season he went 6-19, pitched a complete game as the Mets win 12-4. Leadoff hitter Bobby Klaus (also not a Hall-of-Famer) who had a career .200 average got four hits. The only Hall-of-Famer to play in that game was Dick Allen (back when he was known as Richie Allen). He hit his 20th homer of that season in the 4th inning. That game made me a Mets fan.