Simply post a photo on Instagram that shows you giving your best impersonation of the Stay Strong Flex and use the hashtag #RedSoxFlex. The Red Sox will select the top fifty entries and have fans help vote on their favorite selections on social media.
All photos will be featured on redsox.com/flex. The contest ends on Sunday night at 11:59 p.m. Be sure to follow @RedSox on Instagram for behind the scenes photos all season long.
Click here for the official contest rules.
Photo via Instagram/@redsox