Algeria need a win here to secure their third-place advancement. Mahrez's directness from the right against Austria's left back is the clearest path to goal — if he gets into 1v1 positions, Algeria create dangerous opportunities.
Belmadi will push further up the pitch than usual. The 4-4-2 may become a 4-3-3 to attack Austria more directly — this is a must-win, not a draw-seeking performance.
Austria likely need only a draw to secure second place behind Argentina. Rangnick's press should create problems for Algeria's buildup — Sabitzer and Baumgartner pressing high can win the ball in dangerous positions.
Even in a draw-seeking mindset, Austria won't park the bus. Their pressing identity demands they engage — which creates space for Algeria's counter-attacks.
Even series — 2 wins each in recent meetings. No prior major tournament meeting.