Conversation so far:
What controversy was associated with baseball player Bobby Thomson?
Longstanding rumors that the Giants engaged in systematic sign stealing during the second half of the 1951 season were confirmed in 2001.
Who is Salvador Anthony Yvars?
Salvador Anthony Yvars was a professional baseball catcher.Yvars is best remembered as the player who relayed stolen signals to his teammates during the 1951 pennant-winning season.

Question: Was Walker the catcher?
Self-contained rewrite: Was Rube Walker the Brooklyn Dodges catcher in The Shot Heard 'Round the World?