Spain and Portugal will face off in a high-stakes World Cup Round of 16 match in Dallas this Monday to determine who advances to the quarterfinals. Spain enters the knockout stage as heavy favorites, boasting an impressive 34-match unbeaten streak and a dominant +1.80 expected goals difference. Under Luis de la Fuente, La Roja has shown exceptional form, with the Opta supercomputer giving them a 49.2% chance of winning within 90 minutes. Conversely, Portugal arrives following a chaotic victory over Croatia, fueled by Cristiano Ronaldo's historic achievement of scoring in six different World Cups. While Portugal has struggled against Spain in recent competitive meetings, they carry confidence from a recent Nations League victory. The match promises a tactical battle between elite midfields, with the winner advancing to face either the United States or Belgium in the quarterfinals.