He also began to sell scorecards to fans with the phrase You ca n't tell the players without a scorecard .
By 1900 , Stevens had secured contracts to supply refreshments at several Major League ballparks across the US .
Stevens also began to sell scorecards to fans with the phrase You ca n't tell the players without a scorecard .
By 1900 , Stevens had secured contracts to supply refreshments at several Major League ballparks across the US .