With the result, Union Berlin move up to third place in the standings, while Mainz stay 17th after suffering their third straight defeat of the new season.
The club presented new signing Sergino Dest on Friday and the 19-year-old right back, who arrives from Ajax, is an option of starting on the bench on Sunday.
The injury means that Alba will be forced to pull out of the Spanish national team squad for the forthcoming friendly game in Portugal and the UEFA Nations League ties against Switzerland and Ukraine.
Aston Villa's Ollie Watkins (2nd R) celebrates after scoring his hat-trick goal during the English Premier League match between Aston Villa and Liverpool at Villa Park in Birmingham, Britain, on Oct. 4, 2020. (Xinhua)
"I think I played a really good match. I was very aggressive. I knew from last year I had to change something, so I really wanted to be better than last year and definitely, I was today," said the world No. 2.
The Rams, as the champions of the previous three seasons are nicknamed, started off well and dominated 4-1 after the first half of the game, led by the Canadian forward Matthew Mistele's two goals, but the visitors from Michalovce produced a miraculous comeback by scoring four in a row.
Without Li Yueru protecting the rim, Hebei trimmed the deficit to six points midway through the second quarter, but it was the closest they would come. Li responded by scoring eight points from the bench. Inner Mongolia held their nerve to build a 46-31 halftime lead.
Also on Saturday, fifth-seeded Stefanos Tsitsipas earned a spot in the fourth round after his Slovenian opponent Aljaz Bedene retired from the match and hobbled off the court when trailed by 6-1, 6-2, 3-1.
Beijing closed the first quarter on a 17-4 run, going up 33-17 as the quarter time ran out.
Shaanxi trailed for most of the game, but outscored Wuhan 23-18 in the last quarter to grab the morale-boosting win.
Shanghai's hope of leveling the game was shattered as Barbra Banda's shot in the 87th minute hit the woodwork and bounced off.