Nakashima is a no-name player who lost the last 2 games as a favorite.
Rank 203 vs 213, surface edge negligible.
Viola was playing on home continent against the USA player.
Yet, people hammered Nakashima from -330 to -800.
Unless there was info that Viola broke his arm on his way to the match I don't get it. I had half a unit on Viola.