Only Aston Villa (18) have scored fewer Premier League goals than West Brom (22) and Swansea (22) this season and their meeting on Tuesday night looks unlikely to veer away from the low-scoring trends.
The Baggies have recorded half-time draws in 11 of their most recent 16 matches, including each of their last four when hosting bottom-half teams. Curiously, all four fixtures were goalless at the interval, as have exactly half of their 12 outings at The Hawthorns this term.
Since the start of last season, Swansea have recorded half-time stalemates in 20 of their 30 away days. And with seven of their last 12 trips to bottom-half teams failing to see a goal scored before the break, another goalless first-half looks a decent bet at 2.25.