The Italian legend opened the scoring in his first match for the Argentine club during the Copa Argentina encounter
Daniele De Rossi marked his Boca Juniors debut with a goal in a dream start to his career with the Argentine giants.
De Rossi, 36, joined Boca last month after ending an 18-year stay with boyhood club Roma in Serie A.
The midfielder had an instant impact in his first competitive match for the club, heading in the opening goal against Almagro in the Copa Argentina on Tuesday.
De Rossi got on the end of a corner from Alexis Mac Allister in the 28th minute to put Boca ahead at Estadio Ciudad de La Plata to rapturous applause from the home fans
His strike came in the round of 32 of the cup, with Boca bidding to win the tournament for a fourth time - having lifted the trophy in 1969, 2012-13 and 2014-15.
The former Italy international only scored 63 goals in 616 games for Roma, but made a dream goalscoring start to life at Boca.