Portsmouth currently finds themselves deep in the relegation zone, sitting 22nd in the league and under immense pressure to secure points. Their recent form has shown signs of improvement, with an unbeaten run of three league games, including a home draw against the in-form Queens Park Rangers. Their home performances have been a key support, with only one defeat in their last five home matches, demonstrating strong resilience. Charlton Athletic are currently positioned 17th, slightly above the relegation zone, but with a narrow lead, they still need to actively gain points to solidify their position. Their recent performance has been consistently poor, with six losses in their last eight league games, gradually being drawn into the relegation battle. Their away form is particularly weak, with a very low win rate in league away games this season, and they have failed to win in their last six away games, severely impacting their away confidence. Despite holding a significant psychological advantage over Portsmouth in historical encounters, their recent performance on both offense and defense has been poor, conceding an average of 1.4 goals per game in the last five matches, raising overall concerns. Portsmouth currently ranks second-to-last in league offensive ability, and the absence of key attackers further weakens their attacking threat. Charlton's recent away offense has also been weak, with the total number of goals in their last three league games not exceeding 2.5. Although Charlton has scored at least two goals in their last five away games against Portsmouth in historical encounters, this data is significantly different from the current overall state of the two teams. Under the pressure of relegation, both sides are expected to prioritize defensive stability on the tactical level, minimizing errors, and the margin for error in the match is extremely limited. Against this backdrop, a cautious, stalemate, or even a dull tug-of-war is highly likely, and the total number of goals is unlikely to exceed 2. Overall, Portsmouth, with a stronger will to win and home advantage, is expected to strive for a breakthrough in the face of unfavorable historical encounters, but the process is expected to be difficult. Charlton, despite their poor overall away performance, still has a psychological advantage in encounters, which will help them organize their defense and seek counter-attack opportunities away from home. Score prediction: 1-0, 1-1