Five-year-old Olivia is a HUGE Mercury fan. Her dream is to be Brittney Griner's assistant. BG heard about it, and made it happen. 1 of 6As BG's assistant, Olivia helped come up with a very busy (but detailed) schedule for BG.2 of 6BG kneels down to greet Olivia, right before she presented her with her very own Mercury jersey.3 of 6Olivia watches intently as BG works out with Suns legend Mark West.4 of 6Olivia brought snacks for everyone on the Mercury after practice.5 of 6Finally, Olivia gave BG an autographed photo -- which Brittney loved!6 of 6