Chinese tech giant Tencent's (TCEHY) CEO was interested in buying the messaging app in early 2014. Pony Ma had to delay his trip to seal the deal due to back surgery.
Zuckerberg swooped in and purchased the app in a hastily agreed deal in February 2014. The $19 billion deal was apparently fleshed out over a dinner meeting.
It is not clear whether Zuckerberg knew about Ma's plans or surgery.