Keeper:

See wicket-keeper.

Keep Wicket:

For a wicketkeeper to field.

“Keep wickets in hand,” which is when a batting team tries to have relatively few of its batters get out. Usually done so that more run-scoring risks can be taken near the end of their innings in a limited-overs match, since they will have many batters left and only a few balls left.

King Pair:

See Golden Pair.

Knock:

A batter’s innings. A batter who makes a high score in an innings can be said to have had a “good knock.”

Knuckle Ball:

A type of delivery where the fast bowler holds the ball on the knuckles of their index and middle finger, creating a variation in pace. A knuckleball is a type of slower ball.

Kolpak:

An overseas player who plays in English domestic cricket under the Kolpak ruling, allowing players from certain countries to be treated as domestic players in European Union countries.

Kwik Cricket (or Quick Cricket):

An informal version of cricket with sped-up rules, specifically designed to introduce children to the sport.