In the DLS method, reduced overs are calculated by match officials usually via DLS software or manual calculation. Here is our simple reduced overs calculator which calculate revised overs if match hit by rain in ODIs and T20 formats.

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When & Why Overs Are Reduced

1. Rain or interruption causes a delay.
2. If time lost can't be made up, overs must be deducted.
3. The number of overs reduced depends on how much actual time is lost (minutes) and how many overs can be bowled per hour.

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The Formula (used by officials):

• Match officials assume a standard over rate:
  • One Day Internationals (ODI): ~14.28 overs/hour (4.2 minutes per over)
  • T20 Internationals: ~15 overs/hour (4 minutes per over)

This is the rate used to decide how many overs can be bowled in the remaining time available after a delay.

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📌 Example:

Let’s say a rain delay causes 1 hour of play lost.

• Assume ODI match.
• 14.28 overs/hour × 1 hour = ~14 overs lost
• These overs are deducted from Team B’s innings, as Team A already completed theirs.

So, Team B will now get only 36 overs (instead of 50).

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Key Points to Remember:

Factor	Impact on Overs
Time lost	Reduces total overs
Light/Bad weather	May further reduce overs
DLS formula	Applies new target based on revised resources (not just overs!)

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In DLS Tool

• You don’t manually calculate reduced overs.
• The match referee/official scorer enters the number of overs now possible for Team B.
• DLS calculator uses the revised overs to fetch the resource percentage, and calculate the new target.