The scoreboard for a recent men's championship swim meet in Melbourne, Australia, shows the final standings in the event. What fraction of the finalists are from the USA?
$$
\begin{array}{l|l|l}
\hline \text { Name } & \text { Country } & \text { Time } \\
\hline \text { Maginni, Filippo } & \text { ITA } & 48.43 \\
\hline \text { Hayden, Brent } & \text { CAN } & 48.43 \\
\hline \text { Sullivan, Eamon } & \text { AUS } & 48.47 \\
\hline \text { Cielo Filho, Cesar } & \text { BRA } & 48.51 \\
\hline \text { Lezak, Jason } & \text { USA } & 48.52 \\
\hline \text { Van Den Hoogenband, Pieter } & \text { NED } & 48.63 \\
\hline \text { Schoeman, Roland Mark } & \text { RSA } & 48.72 \\
\hline \text { Neethling, Ryk } & \text { RSA } & 48.81 \\
\hline
\end{array}
$$