Analysis: Four things we learned in Spain's Matchday 16

MADRID, Jan. 9 (Xinhua) -- FC Barcelona claimed a narrow win away to Atletico Madrid, while Real Madrid slipped up in Villarreal and Real Sociedad strengthened their claim to be considered La Liga title outsiders in the 16th round of matches. Here are some things we learned this weekend.

1. Defense sees Barca home

FC Barcelona moved three points clear at the top of La Liga with a 1-0 win away to Atletico