Vasco da Gama(RJ) have only recorded 1 draw and 3 losses in their first 4 away league games this season, which shows their poor quality on away field.
As for the hosts Gremio (RS), they have won 4 of their recent 6 games, with good shape lately. Besides, they have grabbed 3 wins and 1 draw in their recent 4 home matches, with a high winning rate. Moreover, they are obviously superior in their past encounters with Vasco da Gama(RJ).
Under the AH line of -1.00 for the hosts, Gremio (RS) are expected to grab all 3 points.