Not sure if this has been posted but https://m.dickssportinggoods.com/s/rorywins
Terms and conditions state "no purchase necessary"
"To participate without making a Qualifying Purchase, during the Promotion Period, visit a participating Dick’s Sporting Goods or Golf Galaxy location in the United States and obtain a unique numbered Refund Promotion form from a sales associate. Refund Promotion forms will not be available after ordinary business hours of participating stores on May 15, 2019."
Basically, just walk in, ask for a refund Promotion form, and if Rory wins send it in for a free M5 or M6.