Keno doubled his personal tally with a low finish and then headed in his third goal by latching on to a Mariano cross.
The first half of the fixture played in the north of Europe did not bring many scoring chances.
The result at more than 3,600m above sea level in Bolivian capital La Paz meant Palmeiras now have three wins from as many matches to hold a six-point lead over Guarani, who are second in the group.
TEHRAN, Sept. 17 (Xinhua) -- Alireza Mansourian was appointed as the new head coach of Iran's top-flight Tractor soccer club on Thursday, the official website of the club reported.
The ExCo approved the new List of Prohibited Substances and Methods for 2021, which will be published before October 1, 2020, and come into effect on January 1, 2021.
Back in May, several countries followed the successful example of playing football matches behind closed doors in accordance with strict COVID-19 hygiene regulations.
"The dates of the first matches - October 8 and 13 - were ratified at the meeting, while President Infantino expressed FIFA's willingness for all national teams to be on equal terms," CONMEBOL said in a statement.
BERLIN, Sept. 19 (Xinhua) -- Hertha Berlin recovered from their first round German Cup exit to crush Werder Bremen 4-1, while Hoffenheim overpowered a resilient Cologne side 3-2 thanks to Andrej Kramaric's last-gasp goal in the opening round of the 2020/21 Bundesliga on Saturday.
Only 4,985 fans will be in the stadium for Kaiserslautern against Dresden in the third tier.
"These two tournaments came too close to each other for me this time," she added.
But the biggest surprise was the inclusion of 19-year-old Menino, who can play at right-back or in midfield. The Brazil under-20 player was only promoted to the Palmeiras first-team squad in January and has made just nine league appearances for the club.