When the mixed doubles round-robin matches begin in curling Wednesday morning in Beijing, so too will XIV Olympic Winter Games, underway in China less than six months after the torch was extinguished to wrap up the delayed Tokyo Summer Olympics . It will kick off a record 2,800 hours of Olympics coverage from February 2-20 across U.S. rightsholders NBC and its network siblings USA Network (400 hours of coverage planned beginning February 2) and CNBC (80 hours planned). Coverage is also available at NBCOlympics.com and the NBC Sports app via authentication (2,100 hours planned) as well as on the Peacock...