Yes—A Spinner Can Switch Bowling Arms Mid-Over, but Must Tell the Umpire

Yes. A spinner can bowl right-arm and left-arm deliveries in the same over, even changing arm from one ball to the next.

The condition is simple: tell the bowler’s-end umpire before changing your bowling arm. The umpire must then inform the striker. If you change without notifying the umpire, the delivery is a no-ball.

What the law says

MCC Law 21.1 defines a bowler’s mode of delivery by:

• right-handed or left-handed; and
• over the wicket or round the wicket.

The umpire establishes that mode and tells the striker. If the bowler changes it without notification, the umpire must call and signal no-ball, according to MCC’s official Law 21. The ICC Women’s Championship playing conditions effective July 2026 repeat the same requirement in clause 21.1.

There is no requirement to keep the same arm for an entire over, and the striker does not have to approve the change. The striker must be informed through the umpire.

How to switch correctly

Suppose you begin with right-arm off-spin over the wicket and want your fourth delivery to be left-arm orthodox round the wicket.

Before starting your approach:

1. Tell the bowler’s-end umpire, “Left arm, round the wicket.”
2. Wait for the umpire to acknowledge you and inform the striker.
3. Check that any field change is complete.
4. Bowl only when the umpire is ready.

If you return to right-arm over the wicket for the fifth ball, notify the umpire again. Treat every change of arm or side of the wicket as a fresh announcement.

Do not transfer the ball to your other hand during the run-up as a surprise. The striker must know the mode before the delivery.

What happens if you forget?

An unannounced change is a no-ball. Under MCC Law 21, one penalty run is awarded, the ball does not count in the over and the no-ball call does not automatically make the ball dead. The striker cannot be dismissed bowled, caught, LBW, stumped or hit wicket from that delivery, although a run out remains possible.

Some competition playing conditions also make the next delivery a free hit. Check your league or tournament rules rather than assuming every competition treats the following ball identically.

Changing spin type is different from changing arm

Law 21.1 concerns the arm used and whether the bowler delivers over or round the wicket. It does not require a separate announcement merely because a right-arm spinner changes from an off-break to a leg-break while keeping the same arm and side of the wicket.

For an ambidextrous spinner, however, changing from right-arm off-spin to left-arm orthodox changes the stated mode and must be announced. Vijay Yadav described beginning as a right-arm off-spinner and developing his left-arm bowling through practice and support from coaches in a September 2026 ANI interview. Building two usable actions takes practice; it is not merely a match-day surprise.

If you are developing a second action, practise its stock ball separately using a suitable guide to left-arm orthodox spin bowling or your usual spin family. Do not add arm-switching until both actions can land a stock ball reliably.

An 18-ball switching test

Place a target about one bat-length long and one bat-width wide on the length you intend to bowl.

• Balls 1–6: stronger arm only.
• Balls 7–12: developing arm only.
• Balls 13–18: alternate arms every delivery, saying the full mode aloud before each approach.

For each arm, record target hits, obvious full tosses and obvious short balls. Repeat the drill on three separate days. Consider switching in a match only when the developing arm gives you a useful line and length, not simply because the change may surprise the batter.

Before using it competitively, tell your captain and confirm the notification routine with the umpires. Plan the field for each arm’s angle and intended turn rather than assuming one setup suits both; this spinner’s guide to cricketing field positions can help map the changes.