ARLINGTON -- The Rangers, with their committed ownership group signaling full-speed ahead, are on the clock with Japanese pitcher Yu Darvish and have 30 days to sign him to a Major League contract. The Rangers earned the right to negotiate with Darvish by submitting a winning bid of approximately $51.7 million that was accepted by the Hokkaido Nippon Ham Fighters. The Rangers deadline is 4 p.m. C