Quilmes AC
At the age of 14, Chori signed with Quilmes (the oldest football club in Argentina, founded in 1887) after spending four unsuccessful years in the youth system of hometown club Lanús.
Alejandro earned his nickname, 'Chori', while at Quilmes. Domínguez ended up taking one of the older player's spot in the team. He was given the #10 shirt and a spot in the starting lineup. The other kids joked that he had arrived to steal their spots in the team ("El Chori" means "The Thief" in English).
River Plate
After the U-20 World Cup in 2001, which Argentina won, Chori signed with Argentine power River Plate. The move was a bit of a gamble by River. In the quarterfinals of the U-20 World Cup against France, Chori came on as a substitute in the 68th minute. He would have to be subbed off just seven minutes later though after a horror injury to his ankle.
The move paid off in the end though, as River Plate would win the Clasura Championship in 2003, lead by manager Manuel Pellegrini.
El Chori found the back of the net nine times for River Plate in 29 matches.
FC Rubin Kazan
In 2004 Chori would be on the move again, but this time he would move halfway across the world to Russia, signing for Rubin Kazan. The team and Chori struggled in 2004. After finishing third in their first season in the Russian Premier League the previous year, Rubin would finish 10th in 2004. Rubin would finish 4th and 5th the next two seasons.
Alejandro would finish his first stint with Rubin by scoring 21 goals in 63 games.
He won the Best Foreign Player award in 2006.
FC Zenit Saint Petersburg
Domínguez was signed by FC Zenit Saint Petersburg for ¤7 million before the start of 2007 Russian season, breaking the record transfer fee inside the Russian Premier League, however, that record was later broken when Danny moved from FC Dynamo Moscow to Zenit Saint Petersburg for a fee well above ¤30 million.
One of his most notable performances was in the 4-0 UEFA Cup victory over Bayern Munich
which sent Zenit to the final of the competition for the first time in
the history of the club. Domínguez played exceptionally well and
provided two assists. Chori was filling in for the suspended Andrei Arshavin and hadn't played any matches for two months.