Loading...
Lewandowski's goal marked his 18th of the season, keeping him at the top of the Spanish League's scoring chart.
The win brought Barcelona's points total to 45, placing them in third. They are now just four points behind leaders Real Madrid, who lost 1-0 to Espanyol in the same round. Barcelona is also only three points behind Atletico Madrid, who sit in second.
Meanwhile, Alaves remains in 18th place with 21 points, just two points behind Espanyol in 17th.