Captain's challenges and red card subs in place for rugby's Rainbow Cup

Goal-line drop-outs have also been approved by World Rugby

Connacht's Shane Delahunt, 2, receives a red card from referee Frank Murphy during the 2020 Guinness PRO14 Round 15 match between Munster and Connacht at the Aviva Stadium in Dublin. Photo by Ramsey Cardy/Sportsfile

Red card replacements, captain’s challenges and goal-line drop-outs will all be in play during the Guinness PRO14 Rainbow Cup after the initiatives were approved for use by World Rugby.

The three innovations announced on Thursday will be implemented as law trials when the Rainbow Cup kicks off in eight days with a series of local derbies across the five participating countries: Ireland, Italy, Scotland, South Africa, and Wales.