LONDON, Dec 20 (Reuters) - Liverpool striker Alexander Isak came off ‌the bench to score the opener in his side's 2-1 victory at Tottenham Hotspur in the Premier League on Saturday but suffered a potentially serious injury ‌in the process.

Isak was introduced at halftime after a turgid opening period in which Tottenham's Xavi Simons was shown a straight red card and ‌he slotted his side ahead in the 56th minute from Florian Wirtz's first assist of the season before hobbling off.