The record for most 1-hit games during a single season is on the chart above, but can you imagine the disappoint felt by a pitcher who tosses two consecutive / back-to-back 1-hit games? In chronological order they are:

The American League record for most 1-hit games during a single season by a team is held by the 1964 Baltimore Orioles who had five. The National League record for most 1-hit games during a single season by a team is held by the following teams: 1906 Chicago Cubs, 1907 Philadelphia Phillies, 1909 Chicago Cubs, 1911 Philadelphia Phillies, 1915 Philadelphia Phillies, 1979 Philadelphia Phillies and 1999 Cincinnati Reds; each team had four.

The 1968 season is often referred to as the "year of the pitcher" and there was an all-time league leading fifteen 1-hitters thrown in the National League that year. The next closest seasons were both in the American League, both had thirteen and they took place in 1979 and 1988.