Cricket Boundaries Explained: When Is It a Four, When Is It a Six?
How cricket boundaries work — the difference between a four (ball reaches the rope along the ground) and a six (ball clears the rope in the air), boundary catch technique (keep feet inside the rope), what happens when a fielder catches and steps over, and how boundary dimensions vary.
A boundary in cricket is 4 or 6 runs scored when the ball reaches or clears the rope marking the edge of the playing field. Four runs are scored if the ball reaches the boundary rope having touched the ground at any point after being hit by the batsman. Six runs are scored if the ball clears the boundary rope entirely in the air (no ground contact within the field boundary). If a fielder catches the ball near the boundary rope, specific rules govern whether the catch is valid and whether it is a six or catch-out.
When a Four Is Scored
A four is scored when: (1) The ball reaches the boundary rope after bouncing at least once within the field; (2) The ball rolls to the rope along the ground; (3) The ball hits a fielder and then reaches the boundary rope (in which case an additional 4 penalty runs may be awarded if the ball touched a fielder's helmet, per Law 41.4). A four can also be scored from extras — a wide or no-ball that reaches the boundary scores 5 extras (1 for the wide/no-ball + 4 for the boundary). In Test cricket, if the batsmen have run 3 before the ball reaches the boundary, the score is 4 (the higher value takes precedence).
When a Six Is Scored vs a Catch
A six is scored if the ball clears the boundary rope in the air without any fielder making contact (or the fielder makes contact but has any part of their body grounded beyond the rope). A catch is valid (dismissal, no six) if: (1) The fielder catches the ball entirely within the boundary (no part of their body touching the rope or ground beyond the rope); (2) The fielder can release and re-enter from within the field to take the catch again — a catch where the fielder steps outside, releases the ball, and returns to catch it is valid if the ball is never grounded beyond the boundary. The boundary rider 'juggling' rule — popular in T20 cricket — allows a fielder to throw the ball into the air while their foot is on the rope, then step back inside and catch it, as long as their first touch was within the field.
Overthrows and Boundaries
If a fielder throws the ball and it reaches the boundary as an overthrow (the ball going past the fielder trying to run batsmen out), the boundary is awarded PLUS any runs completed by the batsmen at the time of the throw. This is one of cricket's most complex scoring rules: in the 2019 ODI World Cup Final, Ben Stokes hit the ball, which deflected off his bat to the boundary — giving 6 runs (4 boundary + 2 already completed by the batsmen). The incident was controversial because the deflection was accidental (Stokes attempted a dive, his bat touched the ball unintentionally), but under the Laws the runs were correctly awarded. The ICC subsequently clarified the overthrow boundary rule in 2020.
Frequently asked questions
What is the difference between a four and a six in cricket?
Four: ball reaches the boundary rope having touched the ground at least once (rolling or bouncing). Six: ball clears the boundary rope in the air without touching the ground inside the boundary. The simplest distinction: ground contact inside the field = four; entirely airborne over the rope = six.
Can a fielder catch the ball at the boundary for a six dismissal?
No — if a fielder catches the ball at the boundary with any part of their body touching or grounded beyond the rope, the ball is ruled a six (not a catch dismissal). The fielder can throw the ball into the air, step back inside the field, and catch it for a valid dismissal — but only if the ball was never grounded outside the rope and the fielder's re-entry is continuous.
Do all cricket grounds have the same boundary size?
No — boundaries vary by ground. Minimum distance is 65 yards (59 metres) from the pitch; no maximum. Old Trafford has short boundaries (~55 metres at mid-wicket); MCG can extend to 85 metres. This variation is one of cricket's unique features — players must adapt to different ground dimensions rather than fixed field sizes like football or baseball.