World Athletics introduces the Ultimate Championship, a new three-day event in Budapest with $10m in prize money. The event features top athletes competing for individual event winnings of up to $150,000.

The championship includes innovations such as a red carpet entrance, a lane draft for the 200m, and augmented reality for TV viewers. Only the Ultimate champions will receive a trophy, with no medals awarded. Read more racing coverage.

Great Britain's team includes Olympic 800m champion Keely Hodgkinson and mile world record holder Josh Kerr. Despite support from athletes like Duplantis, some, like Warholm, express concerns about the event's impact on the calendar. Related: New Championship Offers Athletes $10m Prize Fund and Innovative Features.

This original Runner World brief is based on reporting from BBC Sport Athletics. Visit the source for its complete reporting, context and any later corrections.