Tuesday night Championship action sees 19th-placed Portsmouth host mid-table Swansea in a clash that could prove crucial for the home side's survival hopes. While the table suggests these teams are closer in quality than the odds imply, a deeper dive into the venue-specific data reveals why the bookmakers have Portsmouth as favourites – and why there might still be value in that assessment. Portsmouth come into this fixture sitting just above the relegation zone with 40 points from 35 games. Their recent form doesn't make for pretty reading on paper – just three wins from their last ten outings – but scratch beneath the surface and there's cause for optimism. That 3-1 demolition of third-placed Millwall at Fratton Park on February 21st wasn't a fluke; it was a statement that Portsmouth can rise for the big occasions. They've also been desperately unlucky in narrow home defeats to playoff-chasing Hull City (0-1) and Sheffield United (0-1), plus a hard-fought goalless draw against Ipswich. The key metric here is their defensive solidity on home soil: just 0.60 goals conceded per game across their last five at Fratton Park. When you're scrapping for survival, that defensive foundation is gold dust. Swansea arrive in Hampshire with a comfortable nine-point cushion on Portsmouth, having collected 1.70 points per game across their last ten matches – a significantly better return than their hosts. However, here's where it gets interesting for bettors: the Swans have been Jekyll and Hyde this season, and their away form is genuinely concerning. They've lost three of their last four road trips, including a 3-0 hammering at Ipswich and a 2-0 defeat at Derby. In those four away games, they've managed just three goals (0.75 per game) while shipping seven at the other end. Their only away win in that sequence came against a Watford side who've been inconsistent at best. The head-to-head record offers further encouragement for Portsmouth backers. The most recent meeting at Fratton Park ended in a thumping 4-0 victory for the home side, and while H2H samples are small (just three meetings in this dataset), Portsmouth's 100% home win rate against the Welsh side is notable. From a tactical perspective, this looks like a mismatch that favours the hosts. Swansea's away struggles (scoring just 0.75 goals per game on the road) meet Portsmouth's disciplined home defence (0.60 conceded). The goal expectancies back this up, with the model suggesting 1.27 goals for Portsmouth against just 0.68 for Swansea – a significant edge that isn't fully reflected in the 2.05 price. **Key Points:** - Swansea have lost 75% of their last four away games, scoring just three goals in that sequence - Portsmouth have conceded only 0.60 goals per game across their last five home fixtures - The hosts beat third-placed Millwall 3-1 at Fratton Park less than three weeks ago - Swansea's away attacking output (0.75 goals per game) is among the worst in the division over the last month - Goal expectancy models suggest a 1.27 vs 0.68 advantage to the home side - Portsmouth kept clean sheets in 40% of their last five home games **Summary:** Swansea's superior league position and recent form (1.70 PPG vs 1.20 PPG) will attract some support at 3.40, but the venue split here is stark and exploitable. The Swans have been dreadful away from the Liberty Stadium, while Portsmouth have proven they can mix it with the division's best at Fratton Park. At 2.05, the home win represents solid value given the underlying venue statistics and Swansea's travel sickness. Back Portsmouth to grind out a crucial three points.