(Peoria, AZ)  --  Wei-Yin Chen got roughed up, giving up four runs over an inning and a third as the Mariners lost 9-6 against the Rockies in Peoria.  Justus Sheffield, the starter for the M's, gave up one run, a solo homer, on two hits while striking out four over three innings.  Seattle will be in Tempe to take on the Angels tomorrow.