The Over/Under 2.5 goals market is popular because it forces you to answer one question: will the match open up?

Over 2.5 becomes attractive when:

• Both sides play high tempo and push numbers forward.
• Defenses allow chances, especially in transition.
• Set pieces are a real weapon (corners, free kicks).
• The underdog can score (even once) to unlock chaos.

Under 2.5 becomes attractive when:

• One team is very conservative away from home.
• Both teams lack finishing or create few big chances.
• The favorite can control possession without urgency.

Pick the “story” first, then pick the line.