Conversation so far:
how is warren linked to M Braves?
In 1957, Spahn was the ace of the champion Milwaukee Braves
what remarkable things Warren Spahn did for the M braves?
He had 2,583 strikeouts, which at the time of his retirement was the highest total for a left-handed pitcher in baseball history
what more records did Warren Spahn create besides the career strikeouts record?
Spahn led the NL in strikeouts for four consecutive seasons
did Warren Spahn achieve anything during his last two seasons?
With the Mets and Giants combined, he won seven games for the season—his last in the major leagues.
did Warren Spahn eventually get to the hall of fame?
He was elected to the Baseball Hall of Fame in 1973, with 83% of the total vote
did Warren Spahn play for any other team besides M braves?
The Braves, The Mets, and the Giants

Question: what was his all time achievement?
Self-contained rewrite: what was Warren Spahn's all time achievement?