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1899 NL Earned Run Average by Team

Every team's total, added up from its players' lines. Earned runs allowed per nine innings

The Brooklyn Superbas led the NL in earned run average in 1899, with 3.25, 0.01 ahead of the Boston Beaneaters. The average across 12 NL teams is 3.86.

Led the NL in 1899 Brooklyn Superbas 148 games
3.25 Earned Run Average 0.01 clear of Boston Beaneaters

A team's total is its players' numbers for the club added up, so a player traded mid-season counts for each team only what he did there. Rates such as ERA and batting average are worked out from the team's summed totals, not averaged across players.