The following are the baseball events of the year 1878 throughout the world.
Inter-league playoff: Boston (NL) and Buffalo (IA) each won 1 game in 2-game series.
| National League | ||
|---|---|---|
| Stat | Player | Total |
| AVG | Paul Hines 1 (PRO) | .358 |
| HR | Paul Hines 1 (PRO) | 4 |
| RBI | Paul Hines 1 (PRO) | 50 |
| W | Tommy Bond (BOS) | 40 |
| ERA | John Ward (PRO) | 1.51 |
| K | Tommy Bond (BOS) | 182 |
1 National League Triple Crown batting winner
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