Yu Darvish received an injection Thursday for a lingering nerve issue in his lower back. It had been bothering him since August. An MRI taken near the end of the regular season came back negative and the Rangers fully expect Darvish to be 100 percent healthy when spring training opens next February in Arizona. The 27-year-old righty boasts a 3.34 ERA, 1.17 WHIP and 11.2 K/9 in his first 401 major league innings.