A 6-4 decision Monday over the Pirates gave the Bobcats their third win in the last four games and extended the club's lead to 2.5 games over their rival.  Marion scored all of its runs in the first inning when six of the first seven batters reached safely off   Tradewater starter Dylon DeLaune, thanks mostly to some poor defensive play behind him.  The big blow in the inning, however, came on a Tyler Bailey two-RBI double with two out. Three errors accounted for all but one of the runs in the inning.  In six innings, the Pirates offense managed only one run on two hits off Kyle Tokunaga in his third start, but reached Marion's struggling bullpen with three runs on four walks and a single off Daniel Szathmary in the ninth.  After Tradewater chased Szathmary from the game, though, Stephen Glaze came on to shut the door, striking out two of the three batters he faced to end the game. Tokunaga earned the win, his first against two losses.  Despite the rough first that led to his third loss of the year, DeLuane kept the Bobcat hitters off balance for the next six innings. Bailey had the only two-hit night for Marion. Jake Hirniak, Cody Schmitt and Landon Weitekamp were the only other Bobcats to register a hit.  David Zorn had big night for Tradewater at the plate, accounting for half of their six hits in four at-bats and scoring a run.  Tradewater left 12 runners on base to the Bobcats' six.