The world No. 2, who lost 7-6 (5), 7-5, had won all six prior meetings with Raonic.
The Czech improved to 12-0 against Anderson with a 6-7, 6-4, 6-4 quarterfinal victory at the Paris Masters.
The city has hosted an event since 1978; it is being cancelled due to lack of funding.
“I know what I'm not doing—making good choices on important points,” said the Swiss.
"If I go, it is because I deserved to be there, not hope someone gets hurt so I get to play," he told L'Equipe.
Andy Murray has been on fire this fall, locking up a spot in London.
We're going learn a lot about Genie after a dismal end to her breakthrough season.
Just how much advice can one person follow on a tennis court?
Previewing and predicting this week's crucial Masters 1000 in Paris.