Boca had 68% of possession and seven shots on target to Libertad's one, in what was largely a lopsided contest at La Bombonera.
Eriksson led Alba scorers with 18 points. Fontecchio finished with 16 points and 8 rebounds.
Zhejiang's Wang Shun clinched gold in the men's 200m individual medley in 1:56.83, leading silver medalist Deng Ziqi from Guangdong by around five seconds. Liu Zongyu from Shandong took the bronze.
The result leaves Leeds with six points from three games, while Sheffield are still looking for their first point of the season.
"I really wanted to give an effort here. It's my Achilles that didn't have enough to properly heal after the [US] Open. I was able to get it somewhat better, but just looking long-term in this tournament, will I be able to get through enough matches? For me, I don't think I could," said the three-time Roland Garros champion.
Valladolid and Celta drew 1-1 with Sergi Guardiola's 66th minute penalty cancelling out Iago Aspas' 44th minute strike for Celta.
The side coached by Diego Martinez had kicked off their campaign with league wins at home to Athletic Club and Alaves, while also getting through two Europa League qualifying rounds, with a 4-0 victory away to Albanian outfit, Teuta and a 2-0 win at home to Locomotive Tbilisi a week ago.
Zhang was 0.45 second faster than the former Asian record holder, Olympic champion Liu Zige, who has kept it for 11 years. There is only a 0.14-second difference between Zhang's new record and the world record held by Swedish Sarah Sjostrom.
"We are convinced that Manuel Baum, as a person and coach, is a very good fit for Schalke. At this point, we would like to thank the German FA in particular," Schalke sporting director Jochen Schneider said.
China's Zhang Shuai overcame local favorite Alize Cornet 6-4, 7-6 (3) to reach the third round, equaling her previous best record at Roland Garros.
The controversial incident happened in Djokovic's last-16 clash at Flushing Meadows against Spain's Pablo Carreno Busta, as the Serbian smashed a ball in frustration which struck a line judge in the neck, causing her to fall to the ground.