Mikel Arteta confirmed both players would miss the home game against French Ligue 1 team Lille.

South Africa, set an improbable 421 runs to win, were 102 for four at the close.

Steve Smith ducked into a bouncer from fast bowler Anrich Nortje and received a lengthy on-field assessment before continuing to bat.

The 39th-ranked Belgian beat the second-seeded Spanish star 7-5, 7-6 (7/4) in the third round to land the tournament's biggest upset yet, and will play Tommy Paul next.

Manchester City emerged unscathed from a hostile reception at Anfield in their first match since a guilty verdict on widespread financial impropriety, but a 3-0 win over Liverpool highlighted the uncertainty that now surrounds the Premier League season.