What is the meaning of Double-header?

A pair of games played one after another between the same teams.

A pair of sporting events, one after the other, at a single venue.

A pair of sporting events, one after the other, broadcast on the same television channel.

The catching of a single fish simultaneously by two fishermen when fishing together.

A double-headed coin.

A train pulled by two locomotives.

Double penetration

Source: wiktionary.org