By Evan Bleier Six years before the Colorado Rockies played their inaugural season in Major League Baseball, aspiring big leaguer Joey Meyer stepped to the plate for the Triple-A Denver Zephyrs in the bottom of the seventh inning against Buffalo Bisons reliever Mike Murphy at Mile High Stadium. With one on and two out, Meyer — who had gone deep three innings earlier and given the Zephyrs the lead on a three-run homer off future Boston manager John Farrell — got a 2-2 slider over the plate from Murphy and pummeled it out to left-center and into Mile High’s second deck in front of a crowd of abo…