Alexander Rossi, Sage Karam confess to Conor Daly prank during Indianapolis 500 practice

Scott Horner
Indianapolis Star

The biggest mystery at the 2022 Indianapolis 500 has been solved. 

Alexander Rossi confessed to draining Conor Daly's hot tub and filling it with 1.75 million tiny beads. Sage Karam acknowledged helping Rossi. 

There were more hijinks throughout May. Colton Herta's cart got tipped on its side. Romain Grosjean's scooter ended up on top of the 9-story Pagoda.

More:'If they get really mad, it's hilarious': The art of pranking drivers at the Indy 500

'A bunch of snakes': Conor Daly vows revenge 

More dollars than beads:Marcus Ericsson earns largest payout in race's biggest purse 

Framing Romain Grosjean?