With this win, Al-Nassr replaced Al-Sadd SC at the top of Group D with seven points, while Sepahan remain in third place, two points off a knockout stage qualification spot ahead of matchday four's reverse fixture on Friday.
Much of the pre-match talk has been about the role Martin Odegaard could play after the Norwegian's successful loan spell at Real Sociedad earned him a quick return to the Santiago Bernabeu.
The Spanish press reported on Saturday that the Welsh international is carrying an injury that sidelined him for a month, but Bale made no reference to that in his first interview.
Walter, who replaced Christian Alves in the 83rd minute, latched onto Jonathan Cicero's cross and needed just one touch before rifling a shot into the bottom right corner.
The club has splashed cash on 12 new players in the current transfer window including foreigners; Uganda international Tito Okello, Cameroonian midfielder Bertrand Ngafei and Malawian midfielder Andrew Malisero.
The others were Tottenham defender Juan Foyth, Manchester City center-back Nicolas Otamendi, Tottenham midfielder Giovani Lo Celso and Brighton midfielder Alexis Mac Allister.
The world's longest leap this year was produced by Chinese long jumper Wang Jianan in 8.36 meters.
Willian opened the scoring from the penalty spot for the visitors and Gabriel Menino also found the target on the hour mark. Marcos Riquelme pulled a goal back for the hosts, who failed to capitalize on having three more shots on goal and over 200 more completed passes than their rivals.
DOHA, Sept. 15 (Xinhua) -- Al-Ahli Saudi FC of Saudi Arabia became the first team to reach the 2020 AFC Champions League round of 16, with a late Marko Marin goal earning them a 1-0 win over Iraq's Al-Shorta in Group A on Monday.
Bremen pulled a goal back six minutes later after Davie Selke headed Ludwig Augustinsson's pinpoint cross into the area.
SHAOXING, China, Sept. 17 (Xinhua) -- Chinese sprinter Xie Zhenye dashed to a 20.72 second win in men's 200m at 2020 Chinese National Athletics Championships here on Thursday.