Barcelona continued their rampant run of domestic form to beat Osasuna 2-0 away from home on Saturday and move to within two points of La Liga leaders Atletico Madrid, with Lionel Messi setting up goals scored by Jordi Alba and teenager Ilaix Moriba.
Paris St Germain also geared up for their Champions League last-16 second leg against Barcelona on March 10 with a no-nonsense 3-0 victory at Stade Brestois in the French Cup last 32 on Saturday.
Kylian Mbappe struck twice and Pablo Sarabia scored for the second game in a row as holders PSG, who host Barcelona on Tuesday after winning the first leg 4-1, stayed on course for a sixth domestic Cup triumph in seven years.
Coach Ronald Koeman hailed Barcelona's next generation of exciting talents after 18-year-old Ilaix Moriba became the latest teenager to make his mark by scoring his first goal for the club.
Barca fielded seven players aged 23 or under but substitute Ilaix made the biggest impact, smashing into the net from outside the box to clinch victory after Jordi Alba had broken the deadlock. "The most important thing for me is that the players are competitive. For me age doesn't count, what counts is what I see on the pitch," Koeman told reporters.