He competed in the Série A with all the clubs, for example being an undisputed starter for the second as it finished second in the 2004 season (45 games).
In 2009, Diego moved to Portugal, where he played for Leixões S.C. and Vitória FC, both in the Primeira Liga.
At the end of his second campaign with the Setúbal-based team, he was chosen as best player in the squad.
[1] In June 2012, 33-year-old Diego signed for Azerbaijan Premier League side Gabala FC, on a two-year contract.
[2] In his first season at his new club he split starting duties with Anar Nazirov, appearing in a total of 18 official matches – two in the domestic cup – and making his debut on 4 August against Simurq PFC.