Analysis: Four things we learned in Spain's matchday 15

MADRID, Dec. 2 (Xinhua) -- The 15th round of matches in La Liga saw Barcelona drop another three points, while Kylian Mbappe scored for Real Madrid and Atletico Madrid enjoyed an easy night in Valladolid. Here are some things we learned this weekend in Spain.

1. Barcelona losing control

It wasn't the absence of Lamine Yamal from the starting 11 that was the undoing of FC Barcelona at home to Las Palmas on