MasterChef (US) - Season 9 Episode 7 -

The contestants face a mystery box challenge where they must create a dish using one common ingredient – walnuts. The winner receives 3 huge advantages. Later, the MasterChef kitchen welcomes American soccer legend, Alexi Lalas, who introduces a street-food themed elimination challenge that involves popular food among soccer fans in various countries. Then, it is up to the judges to decide who heads home.