Claim: 1999 Brazilian Grand Prix had nine drivers, one of whom was Mika Häkkinen (born 28 September 1968).
Evidence: Finland Mika Häkkinen 9 Mika Pauli Häkkinen
(1968-09-28) 28 September 1968 (age 52)
Helsingin maalaiskunta, Finland 
Mika Pauli Häkkinen (Finnish: [ˈmikɑ ˈhækːinen (listen); born 28 September 1968), nicknamed "The Flying Finn", is a Finnish former racing driver. Finland Mika Häkkinen 9