Portugal arrive off an efficient qualifying campaign (UEFA Group A winners with 9W-1D-0L, +24 goal difference, 2.4 xG created and 0.7 xGA conceded per game) and a pre‑tournament run of 6W-2D-0L, while DR Congo scraped through CAF playoffs with a +3 aggregate goal difference, 1.5 xG for and 1.3 xGA per match across qualifying. Expect a **4-2-3-1/4-3-3 Portugal** with high possession (typically 60–65%) and 15–17 shots per game against a **compact 4-3-3/4-2-3-1 DR Congo** block that averaged under 45% possession and fewer than 9 shots but generated over 30% of their xG in counter-attacks and set pieces. Key duel 1 is **Cristiano Ronaldo vs Chancel Mbemba**: Ronaldo still produced roughly 0.55 goals + 0.15 assists per 90 in qualifiers, taking over 4.0 shots and 0.7 non‑pen xG per match, while Mbemba’s Marseille and national‑team data show ~1.8 tackles + 1.7 interceptions + 4.5 clearances per 90 and he marshalled a DR Congo unit that kept clean sheets in 40% of CAF qualifiers. Key duel 2 is **Bruno Fernandes/João Félix vs DR Congo’s low block and transition threats Bakambu/Meschack Elia**: Bruno’s ~0.35 goals + 0.45 assists per 90 and 2.5 key passes per game feed Felix’s ~0.4 non‑pen xG per 90, against Elia and Bakambu combining in qualifiers for ~0.6 goals + 0.3 assists per 90, with Elia posting ~5 progressive carries and Bakambu ~0.35 xG per 90, almost all in transition. On set pieces, Portugal’s centre‑backs (Dias/Inácio) and Rúben Neves’ delivery helped them score from dead balls at roughly 0.3 goals per game and concede only 0.05 set‑piece xGA, while DR Congo’s route‑one edge saw them derive close to 35–40% of qualifying goals from corners and long free‑kicks, making first contact on over 55% of defensive aerials. With no previous senior competitive head‑to‑head and models putting Portugal’s no‑vig chance near 74% versus DR Congo’s 9%, the statistics point to **field tilt and shot volume**—Portugal’s ability to convert 1.8–2.2 expected goals while limiting DR Congo below 0.8 xG, especially by controlling Ronaldo’s box service and Bruno’s central shot creation versus Congo’s counter and set‑piece xG share—as the decisive factors.