Japan seeks to match Tunisia's intensity in World Cup's historic 1,000th match as Monterrey heat poses a challenge.

What happened: Japan's coach Hajime Moriyasu said his team is preparing to face Tunisia on Saturday in the 1,000th match in World Cup history. Tunisia has a new coach, Herve Renard, after Sabri Lamouchi was fired following a 5-1 defeat to Sweden. Japan is treating this as a matchup against a fundamentally different opponent.

Why it matters: Japan drew 2-2 with the Netherlands in its opening Group F match but the team is not satisfied with that result. Moriyasu emphasized that Japan believes it needs to win against Tunisia, signaling that the team views this match as a critical opportunity to gain ground in the group stage.

What to watch: The match will be played in Monterrey, where Moriyasu said conditions are hotter and more difficult than Japan's first match in Dallas. Japan has already trained to handle the heat, so how the team adapts to the environmental challenge while executing its game plan will be key to performance.