NBA to experiment with challenge flag, report says Unknown 00:05 The NBA will experiment with the use of a challenge flag during Summer League games this year. Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsFirst-half run helps New Mexico beat Utah St. in MW tourney (Mar 10, 2018)No. 15 Arizona, USC battle for Pac-12 crown (Mar 10, 2018)Transfer news & rumours LIVE: PSG unsure of Neymar's plansMeet the women of India's wheelchair basketball team, who are scoring points against all oddsSouth Africa’s Rabada charged over Smith shoulder bumpKawasaki Frontale beats winless Gamba Osaka in J-League
