Many gymnastics fans wondered if there was something going on with McKayla Maroney when there was no footage of her from the last National Training Camp. And then when Italy posted the nominative list for the Jesolo Cup and Maroney was not on the list, this increased speculation. Marta Karoyli confirmed to Gymnastike in an interview following the American Cup that Maroney is indeed dealing with a knee injury.
Karoyli told Gymnastike that Maroney started having problems with her knee after worlds and took some time off to heal. She started training again recently but was still having problems. They are now looking into treatment options (or as Marta put it, intervention).
Check out the interview (including updates on the rest of the Fierce Five) on Gymnastike.