Analysis: Four things we learn from Spanish La Liga matchday 18

MADRID, Dec. 20 (Xinhua) -- The 18th round of matches in La Liga saw the title race effectively reduced to two sides as Real Betis and Atletico Madrid lost their respective games, while Sevilla won and Rayo Vallecano continued their impressive return to the top flight. Here are some things we learned this weekend in Spain.

1. A two-horse title race

Sevilla's late win at home to Atletico Madrid means they