Neymar picked up a calf injury during Sunday's 3-0 home defeat to Coritiba, confirmed by Santos medical head Rodrigo Zogaib as a 2-millimeter edema causing swelling in his right calf. The condition sidelines him for Santos' upcoming Copa Sudamericana, league, and Sudamericana matches, though he is expected to be fit by May 27 to join Brazil's World Cup camp.

The injury confirmation arrived just two days after Carlo Ancelotti included Neymar in Brazil's 26-man World Cup roster. Ancelotti's staff raised concerns about Neymar's availability for the Panama friendly on May 31, since the coach had previously omitted him from every call-up, insisting on 100% fitness.

Neymar didn't realize he'd been substituted after receiving treatment mid-match and attempted to return to the field, triggering a heated confrontation with the referee. He missed Wednesday's Copa Sudamericana draw against San Lorenzo and is expected to sit out Saturday's league match against Grêmio and next Tuesday's Sudamericana game. Brazil faces Morocco, Haiti, and Scotland in Group C.