"Feilding Yellow are another level above other teams at the moment and for us to get up to that level is our next target."
Saturday was the final weekend of round one in the Manawatū Colts rugby competition and the win left Metro sitting third on the ladder.
They are tied on points with MURFC Varsity White, who they will take on at Massey in Palmerston North this Saturday, kicking off at 1pm.
Cosford said Varsity White have a strong team all around, but two players in particular - their first five-eighth and their No 8 - will need to be shut down.
"We let the boys know that's who we've got to isolate. We've got to keep them under wraps and not let them have a free run," he said.
"We beat them in the first game at the beginning of the season, but their first five-eighth got injured in the first five minutes which helped our cause."
Metro beat Varsity White 26-17 in Whanganui that time on March 30.