Former Manchester United defender Marcos Rojo converted the decisive spot-kick after the aggregate score was locked at 0-0 at the end of normal time, reports Xinhua.
The result means Boca will face Palmeiras in the semifinals, with the first leg slated for September 4 and the return fixture on October 4,
In Wednesday’s only other Copa Libertadores quarterfinal, Palmeiras were held to a goalless home draw but advanced by virtue of a 4-0 win in the first leg.
On Thursday, Olimpia will host a Fluminense side that has a 4-0 advantage after the first leg.
–IANS
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