Ever since Boca Juniors lifted the Copa Argentina in 2015 after a controversial final against Rosario Central there has been something of a grudge between the two clubs and after El Canalla exacted revenge last year in the quarter finals, this year’s last 16 meeting promised much of the same.
And it got all the typical feistiness and debated refereeing decisions to be expected. However, the decisive moment came midway through the first half when Mauricio Martinez arrived at the backpost to thump a volley past Guillermo Sara.
The goal coming after Central felt a sense of deja vu when Pablo Pérez clearly deflected a goal-bound shot wide with his arm but referee Fernando Rapallini gave nothing.
Boca had chances but lacked their usual fluency despite Guillermo Barros Schelotto opting not to rotate his squad at all for the fixture.
Darío Benedetto limped off late on as a precaution but should be fit for international duty and with Boca unable to find an equaliser, their supporters provided another talking point. Smoke from their flares prompted a brief half to the action before a linesman was hit by something thrown from the crowd.
Central had Leonardo Gil sent off in stoppage time but held on for a place in the quarter final and await the winner of Banfield against Godoy Cruz.