Born in Santo Tomé, Corrientes, Rocha began his professional career at Newell's Old Boys in 1972, he was part of their Metropolitano winning team in 1974.

On March 12, 1994, Ivica Osim was removed from the technical leadership of Panathinaikos 6 games before the end of the 1993–94 season and Rocha was asked to replace him.

He made Juan José Borrelli, who was under question and possible transfer during Osim's reign, a vital member of the starting lineup as well as G.S.

By defeating Olympiacos at home and away, he became the third Panathinaikos coach to do so after Kinsler and Gorski, while in the following years only Victor Munoz in 2007 became the winner of both league derbies.

Rocha was removed from Panathinaikos on 13 October 1996, having earlier been eliminated from the Champions League and UEFA Cup qualifiers by Rosenborg MK and Legia respectively.

By this point, financial problems were surging and players had been getting lower wages, however Rocha pledged allegiance to the club and extended his stay with Thesprotos.

Moreover, another early elimination from the Greek Cup this season along with the bad 2022 results prompted Rocha to ask for bigger fan support as attendances had been decreasing compared to previous years.

The problems continued into the 2022-23 season and Rocha by this point felt, according to himself, that he was "not just their manager anymore, but also their life counselor, because I had also lived these rough moments.

We had to do work with Thesprotos from scratch and I developed a special connection with my players who are amazing characters, hailing here from Greece and 3-4 of them from Argentina".

"I wish I could hug his family, I really do" was the final comment of Rocha on television and people all over Greece praised him for his loyalty to his players and his affection towards them.

Rocha agreed to continue to manage the club after the end of the season in spite of the failures and hardships that came with this season and on 8 June, for his unwavering loyalty to Thesprotos Football Club, he was announced to become an Honorary Citizen of Igoumenitsa, with the public ceremony taking place at the Municipal Stadium of Igoumenitsa (Thesprotos' home stadium) on 10 June, right before the match against Almopos.