In his first major league start, Al Worthington blanks the Pirates, 6 – 0. The Giants rookie will repeat the feat in his next start blanking the Dodgers to tie a major league mark.

On July 6, 1953, In his first major league start, Al Worthington blanks the Pirates, 6 – 0. The Giants rookie will repeat the feat in his next start blanking the Dodgers to tie a major league mark.

Source:

Baseball Reference July 6