Bolivia will field a depleted team for the matches in Sao Paulo on October 9 and La Paz four days later amid a series of controversies affecting the national football scene.
The win also improves the Serbian's season record to a stunning 34-1. The only defeat came in a disqualification earlier this month at the US Open, where he hit a ball in frustration which struck the line judge on the neck.
The "Eisernen" made a perfect start on home soil as Christopher Lenz tested Mainz goalkeeper Robin Zentner in the early stages, before Max Kruse nodded home his debut goal after Sheraldo Becker's pinpoint cross to the far post in the 13th minute.
It was immediately clear whether the pair would be replaced.
Clinching a victory in his 100th match at Roland Garros, the record 12-time champion secured a place in the last four for 13th time in the clay major, ending an impressive run from Sinner who had upset 11th seed David Goffin and 6th seed Alexander Zverev in his previous matches.
While predecessor Wagner could count on a seven-week-long preparation phase, only two weeks remain for Baum to get the team back on track, when Schalke faces Union Berlin on October 18 on home soil in the Bundesliga.
American Sara Hall, who sprinted to surpass world champion Ruth Chepngetich in the last meters, finished second in 2:22:01. Chepngetich from Kenya completed the race four seconds later.
As opposed to early sluggishness last game, Xinjiang heated quickly into the game with a 10-0 surge on Shanghai's consecutive turnovers, before Bao Meng's jumper snapped Shanghai's scoring drought over six minutes. Xinjiang set up a 10-point cushion as the first quarter ran out.
Defending champion Nadal was one of the "victims" of this epic clash, as his quarterfinals match against Sinner, which was scheduled as the last match of the day,had to start later and ended in the early hours of Wednesday.
Alba's natural replacement in the Barca squad, Junior Firpo, is also injured at the moment, although he is expected to be able to return to training in the coming days. Enditem
Elsewhere, Wolfsburg and Augsburg shared the spoils after playing out a goalless stalemate. Enditem