It was just a matter of time.From the moment the Dodgers took on his seven-year, $142 million contract as part of their big trade with the Boston Red Sox in August 2012, Carl Crawford's paycheck and eroding skills were working against him. The combination reached an unsurprising conclusion Sunday when the Dodgers designated the veteran outfielder for assignment, clearing a roster spot for Austin Barnes to be promoted from Triple-A Oklahoma City.