By Ed Warner Our sport columnist on attempts to stimulate interest in athletics outside of the Olympics, disarray at Middlesex and British basketball, and Premier League clubs’ latest wheeze. It takes eight days for USA Track and Field to sift America’s athletes to select the nation’s Olympic team. Eight days of trials with an uncompromising first-three-across-the-line selection process. Such is the USA’s abundance of talent. Contrast that with every other nation, all lacking the luxury of over-supply. This weekend’s British Championships double up as Olympic trials, take just two days and lac…