Madrid Open tournaments were unable to guarantee the tournament could be staged safely next month.
The decision to call off the tournaments at Indian Wells this week prompted confusion and frustration among some players.
Rafael Nadal was in California when it was announced the Indian Wells Masters and Indian Wells Open had been cancelled.
Amid concerns over the coronavirus, the Indian Wells Masters and Indian Wells Open have been called off.
Andy Murray has yet to play a competitive match in 2020 but is hoping to return in Miami.
Victory at the Paris Masters kept alive Novak Djokovic's hopes of finishing the season as world number one.
Novak Djokovic won his fifth Paris Masters title on Sunday, meaning he can still beat Rafael Nadal to finish the year as world number one.
Denis Shapovalov was handed a spot in the Paris Masters final after Rafael Nadal withdrew with an abdominal injury.
Novak Djokovic saw off Grigor Dimitrov to set up a final clash with either Rafael Nadal or Denis Shapovalov in Paris.
Rafael Nadal overcame a stern test from Jo-Wilfried Tsonga in Friday's final match to progress through to the Paris Masters semi-finals.