U.S. sprinter Erriyon Knighton receives 4-year doping ban
American sprinter Erriyon Knighton received a four-year doping ban on Friday that will keep him out of the 2028 Los Angeles Olympics.,Knighton, 21, thAmerican sprinter Erriyon Knighton received a four-year doping ban on Friday that will keep him out of the 2028 Los Angeles Olympics.,Knighton, 21, th