Blackburn just ended their losing streak, thereby boosting their morale. Besides, their home record is impressive.
On the other hand, West Brom won 3 consecutive games lately with a great form. Besides, they still need points to consolidate their top spot in the league.
The AH line is away team (-0.75), which is in favor of West Brom.
Therefore the Baggies should be able to win this away game.