The Copa Libertadores is back. After a six-month hiatus due to the COVID-19 pandemic, South America's premier club competition resumes on Tuesday, with four group-stage fixtures.

When the tournament was suspended back in March, the first two matchdays of the eight groups had already been completed, leaving each side with four more games to play in their quest to reach the last 16.

The round of 16, like the quarter-finals, will be played over two legs before the end of the year. The semi-finals, also a two-legged affair, and the final will be played in January 2021, with the decider a one-off match at Rio de Janeiro's legendary Estadio Maracana.

Among those in action when play resumes this Tuesday will be five former champions: Colo Colo and Penarol, who cross swords in Chile; Santos and Olimpia, who meet in Brazil; and Liga Deportiva Universitaria, who will be in Peru to take on tournament debutants Binacional.