Charlton Athletic enters the September 12 Championship fixture at The Valley with strong early-season momentum, sitting top of the table after three wins from three league games, including a 1-0 home victory over Preston North End. Portsmouth, by contrast, has collected just one win in its opening four competitive matches and sits mid-table following a 2-1 defeat at Bristol City. Portsmouth’s attacking options are further hampered by the long-term absence of winger Josh Murphy, who underwent groin surgery and is expected to miss around eight weeks. Charlton’s recent home form and head-to-head edge against the visitors contribute to trader consensus favoring the Addicks at 46.5% implied probability, with Portsmouth at 28.5% and the draw at 25.5%.