I missed the game, but it is said to have been a good one. A more detailed review is available here, and the goals can be seen below:
As a side note, Argentine newspaper Ole claims that the referree did a poor job - not awarding River a penalty, not giving Central two well-deserved red cards, and subtracting one minute from the original injury time that had been given (played 3 extra minutes, instead of 4). A bit suspicious, but unsurprising nonetheless. As long as it doesn't happen again (especially in two weeks vs. Boca), I won't complain.