RIO DE JANEIRO, Brazil (AFP) — Brazil forward Neymar is a doubt for the start of the World Cup after injuring his calf, requiring two to three weeks of treatment, the national team's doctor Rodrigo Lasmar said on Thursday. The 34-year-old Santos star will miss Brazil's two pre-World Cup friendlies against Panama and Egypt, but may also be out of their tournament opener against Morocco on June 13. An MRI scan...