Mike Piazza broke the MLB rookie record for home runs with 33 on September 27, 1993, surpassing previous Los Angeles Dodgers records held by Steve Garvey and Pedro Guerrero. Piazza went 2-for-4 with a home run and two RBI in the Dodgers' 7-3 loss to the Chicago Cubs.
From the collection: Mike Piazza fan-cave plaque →
Source: Historical record