Chris Armas and his Colorado Rapids have washed away the bad taste of last season’s last-place finish. This year’s flavor could very well be home-field advantage in the first round of the MLS Cup Playoffs. With the All-Star break in the rear-view mirror and Leagues Cup right around the corner, it’s as good a time as any for The Denver Post to grade each player’s performance so far this season. The grades are based on a few factors, including performance vs.