Grandma has most definitely entered the portal. 7 count them 7 losses in a row:
Jabber
Vroom Vroom
Ryby
Slutty
Co Co
Andreeva
Mavs
That must mean:
Rude
Sinner
Zverev
kunt runt
This has happened before, most famously or infamously with college bowls. 9-0 start and then winless finish. Every time on verge of winning big, this happens.