OAKLAND, Calif. - Welcome to the silly season.The Rangers all but acknowledged their chances of competing were done in May. They started rebuilding in full in July. And now, with three weeks remaining on the schedule, they appear to even have run out of games against contenders that might allow them to make some kind of impact on the playoff races.Instead, after a wasteful, 7-3 loss to Oakland Sunday, the Rangers have three weeks of glorified exhibitions to paddle through.