Roger Federer at the 2018 Shanghai Masters. (AP Photo)

In 2009, the Shanghai ATP Masters 1000 made its debut, bringing a much-needed exclamation point to the Asian swing For almost a decade, the tournament has brought a bigger market for tennis as the only Masters 1000 not located in Europe or North America.

Despite nine editions, four players have hogged all of the glory of winning the singles titles. It's a unique history of past winners, and now is the time to test your knowledge of Shanghai: