The H2H record strongly supports a low-scoring match, with only 1 of 4 meetings exceeding 2.5 goals and none seeing both teams score. Both teams are in declining form, with Preston averaging just 1 point per game in their last 3 and Southampton 0.67, which typically reduces goal output. The implied probability of 80% is close to my assessed 82%, but the edge is minimal, so this is not a value bet.

The H2H record is the strongest signal, with zero BTTS occurrences in 4 meetings, indicating a pattern of one team dominating defensively. Despite both teams having 0% clean sheet rates in their respective splits, the H2H trend overrides this. My assessed probability of 76% exceeds the implied 71%, but the edge is only 5 percentage points, so it's borderline value; however, confidence is solid at 75%.