How Are IMX Scores Calculated When a Swimmer Ages Up?

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Q: What happens if a swimmer ages up during the season?
A: IMX scores are calculated based on a single age within a single season (September 1 – August 31). However, swimmers often age up mid-season, which means their best times from the younger age might still be their fastest in the season.

To ensure fairness, if a swimmer ages up, we:

• Carry over their best times from the younger age group, as long as they were the fastest times achieved that season.
• Recalculate their Power Points using the new age group’s scoring table.

Example:

• A swimmer starts the season at age 11 and turns 12 in March.
• Their best 200 IM time as an 11-year-old was in January (let’s say 2:30.00).
• They swim the 200 IM again in May, but their time is slower (2:31.00).
• Since we use the best times from the season, we keep 2:30.00 in their IMX score at age 12, but recalculate the Power Points for a 12-year-old.

This ensures swimmers’ best performances count, even if they age up mid-season.