GEORGE TOWN, Cayman Islands (Sporting Alert) — Yohan Blake fired his own warning to his rivals with a new seasonal best of 9.84 seconds to win the men’s 100m dash at Wednesday night’s inaugural Cayman Invitational at the Truman Bodden Sports Complex. Blake, the IAAF World Champion over 100m last summer, improved his best for the season from 9.90secs with the run, while going .02 seconds...