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How did the 1963 season start for Sandy Koufax?
In 1963, Major League Baseball expanded the strike zone. National League walks fell 13 percent. Koufax reduced his walk rate to 1.7 in 1963, which ranked fifth in the league.
Did Koufax suffer any injuries during the 1963 season?
Are there any other interesting aspects about the Sandy Koufax article?
Koufax won the NL MVP Award and the Hickok Belt, and was the first-ever unanimous selection for the Cy Young Award.

Question: What records did Koufax set in 1963?
Self-contained rewrite: What records did Sandy Koufax set in 1963?