Swansea have bounced back in form lately, with a 3-1 win over Huddersfield in their last home match.
As for West Bromwich, they have lost both of their last 2 games, and now they are also inferior in stamina.
Now the AH line is -0.25 for the visitors, which is overestimated for West Bromwich.
So Swansea are expected to grab 1 point at least in this home match, and a draw is the most likely outcome.