In my lifetime I’d say Mexico 99-2007. Absolutely dominated Concacaf (sadly lost to the US in 2002 but apart from that), a Copa America Final and a 3rd place if I remember correctly, a Confederations Cup and being pot 1 in the 2006 World Cup.
Sadly lost to Argentina in extra time in the last 16.
Also worth mention World Champions U17 in 2005.
In 2007 was the last time Mexico won a knockout game outside of Concacaf, all downhill form there.
In my lifetime I’d say Mexico 99-2007. Absolutely dominated Concacaf (sadly lost to the US in 2002 but apart from that), a Copa America Final and a 3rd place if I remember correctly, a Confederations Cup and being pot 1 in the 2006 World Cup. Sadly lost to Argentina in extra time in the last 16. Also worth mention World Champions U17 in 2005. In 2007 was the last time Mexico won a knockout game outside of Concacaf, all downhill form there.