Follow along with results and highlights from each event as the decathlon unfolds in Tokyo.

Video app TikTok said Friday that its new CEO is Shouzi Chew, the new CFO of its Chinese parent company, ByteDance.

TikTok denies it is a national-security risk and is suing to stop the administration from the threatened ban. TikTok denies that it has shared user data with the Chinese government or that it would do so if asked. It competes with tech giants such as Microsoft and Amazon that provide cloud services as well as business-software specialists like Salesforce. The president said on Aug. 18 that Oracle was “a great company” that “could handle” buying TikTok. He declined to state his preference between Oracle and Microsoft as buyers.

TikTok's app features short videos, many with music and dancing, that has become a favorite of younger people and is known for its goofy, light-hearted feel. (AP Photo/Damian Dovarganes, file)TikTok, the popular short-video app that has also drawn national-security and privacy concerns, has a new high-profile CEO from Disney, Kevin Mayer. Mayer will also be chief operating officer of TikTok's Chinese parent company, ByteDance, and report to its founder and CEO, Yiming Zhang, the company announced Monday. TikTok's app features short videos, many with music and dancing, that has become a favorite of younger people and is known for its goofy, light-hearted feel. He leaves Disney a few months after the entertainment giant named a longtime executive , Bob Chapek, to replace the well-regarded CEO Bob Iger.