<p>This market will resolve to "YES" if Lionel Messi makes at least one official appearance for the Argentina national team after the 2026 FIFA World Cup Final on or before December 31, 2026, 23:59 UTC. Otherwise, this market will resolve to "NO."</p><p>An appearance counts regardless of whether Messi starts or comes on as a substitute. Friendly matches and official competitive fixtures both count.</p><p> The primary resolution source for this market is official communication from the Argentine Football Association (AFA) at <a href="http://afa.com.ar/" rel="noopener noreferrer" target="_blank"