It's only been six years, Eric Stephen of True Blue L.A. found, since the Dodgers gave up at least four home runs in one season to opposing pitchers, which reduces some of the astonishment over Ross Ohlendorf hitting a three-run blast tonight to catapult the Pirates to a 6-2 victory over Los Angeles that eliminated the Dodgers from the 2011 National League West race.Some of the astonishment, but not all. Ohlendorf was 7 for 100 in his career with no extra-base hits when he hit his blast off Dana Eveland in the second inning to break a 1-1 tie.It was a come-back-to-Earth game for Eveland, although he pitched shutout ball in four of his five innings. But even though the Dodgers scored a run off Ohlendorf in the first inning after only two batters (Dee Gordon single and steal, Justin Sell