High-priority alert based on source significance and keyword relevance.
Context
What happened: Lionel Messi retired from Argentina's national team after a 21-year international career, making a final appearance in Buenos Aires on Tuesday.
Key numbers: 126th international goal, 208th cap, 85,000 supporters, 3-0 win over Benin, age 39.
Why it matters: The match was framed as a scripted finale for a player widely regarded as the greatest in history, with Messi scoring and assisting in his farewell.