In the 1930's, radio station far from the bid cities would have "live" real-time broadcasts of baseball games. The station's local announcer would take reports off the wire service and, creating as he went, broadcast out as if he were actually seeing the game before his eyes.

Once the wire-service bore down at a crucial juncture of a Cubs/Cardinals game. The broadcaster, stalling for time, improvised wildly -- "He fouls off another pitch!" "The manager is strolling out to talk to the pitcher. He looks worried, folks." -- and seamlessly filled a half-hour of dead-air time. The young broadcaster's name? Ronald Reagan.
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