He had a brief but successful stint with the team, scoring 5 goals in the Copa Libertadores 2000 match against Bolivian side Blooming.

At the age of 21, Alfredo Moreno joined Club Necaxa (on loan with the option to buy the player in a definite purchase) for the Verano 2001 season.

After he left Necaxa, however, Boca Juniors sent Alfredo on loan to China's Shandong FC where he had difficulty not only with his football abilities, but also the culture and communication.

Once again, Moreno would have a second stay with "Los Rayos" for the newly renamed 2003 Apertura where his presence was immediately noticed.

In 2006, he played the Copa Libertadores again, this time with UANL Tigres alongside fellow Necaxa striker Ariel Lopez "El Chupa".

However, both failed to score in two goalless draws against Libertad of Paraguay where Tigres lost in penalty kicks.

After much speculation, after three bad seasons and after defending the Rayos jersey for more than five years, Moreno parted ways with Necaxa.