Kylian Mbappe completed a remarkable week as he scored one and set up another to inspire Paris Saint-Germain to a 4-1 win at Strasbourg as the French champions reduced Lille's Ligue 1 lead to three points on Saturday.
The France striker, who netted a double in PSG's 3-2 win at Bayern Munich in the Champions League quarter-finals earlier this week, opened the scoring with Pablo Sarabia, Moise Kean and Leandro Paredes also on the scoresheet to put the capital side on 66 points from 32 games.
Strasbourg, who pulled one back through Moise Sahi, are 14th on 36 points.
Lille beat Metz 2-0 away on Friday.
They went ahead on 16 minutes when league top scorer Mbappe, set up by Paredes, beat Matz Sels with an angled shot for his 21st goal of the season.
PSG doubled the tally 11 minutes later as Sarabia found the back of the net with a low crossed shot.
Kean added a third on the stroke of halftime after being played through by Mbappe, resisting Lamine Kone's challenge before firing past Sels.
"We took him out as a precaution," Pochettino told a news conference. "We have a great medical sector with great professionals, we will see, we hope there is nothing serious."
Strasbourg reduced the arrears thanks to teenager Sahi in the 63rd minute, but the visitors made sure there would be no hope of a comeback in the 79th when Paredes netted with a superb 25-metre free kick.