Jessica Pegula defeated her close friend Madison Keys to end her Australian Open title defence and settle a bet involving apple pie with cheddar cheese on top.
In an all-American encounter, Pegula needed just 78 minutes to complete an impressive 6-3 6-4 victory and set up a quarter-final with compatriot Amanda Anisimova, who defeated China's Xinyu Wang later on Monday.
Defending champion Keys hit 26 winners - 12 more than Pegula - but she was undone by 28 unforced errors on Rod Laver Arena.
Pegula not only walked away with bragging rights over her podcast co-host, but she also won a bet that means Keys must sample something which is a Thanksgiving tradition for the Pegula family.