The La Liga race is now a two-team battle with a narrow goal differential the only thing separating Barcelona (13-3-4) from Real Madrid (12-1-7). Barcelona hasn’t always been dominant this season. Although it’s unbeaten in its last nine league matches, it lost to Atletico Madrid in the Supercopa semifinal — a loss that cost coach Ernesto Valverde his job — and struggled to beat third-tier Ibiza in the Copa del Rey earlier this week. The will have to regroup quickly for Valencia (8-5-7), its opponent Saturday (BeIN Sports, 7 a.m. PST). If it stumbles, Real Madrid can take sole possession of the top spot by beating Real Valladolid (4-6-10) on Sunday (BeIN Sports, noon PST).