Gareth Bale scored a double in a commanding 3-0 win for Real Madrid in its La Liga opener at Real Sociedad Sunday, building on his stunning displays for Wales at Euro 2016. Bale opened the scoring with a powerful header in the second minute and rounded off the win four minutes into added time with a simple finish after new arrival Marco Asensio had scored his first league goal for Real in the 40th with a sumptuous lob. "It's important to get off to a winning start especially at a ground as difficult as this one. This was the best way to start the season," Zidane told reporters. "Every player put in a huge effort and we attacked and defended together. If we fight for every ball we can achieve big things." Elsewhere, title rival Atletico Madrid was denied a win with virtually the last kick of the game and had to settle for a 1-1 draw at home to promoted Alaves. The game looked to be heading for a goalless draw until the home side was awarded a penalty in injury time for a handball, allowing Kevin Gameiro to mark his Atletico debut by converting from the spot in the 93rd minute. Diego Simeone's side was dealt a nasty late surprise though when Manu Garcia let fly from outside the area to salvage a point for the Basque side, the 2001 UEFA Cup runner-up which was playing its first top flight game in 13 years. Earlier Sunday, Sporting Gijon beat Athletic Bilbao 2-1 thanks to quick fire goals from Duje Cop and Victor Rodriguez at the start of the second half, with Borja Viguera scoring late for the visitors. Milan wins thriller Forward Carlos Bacca scored a hat trick and goalkeeper Gianluigi Donnarumma saved a last-gasp penalty to give AC Milan a dramatic 3-2 win over Torino in their Serie A opener Sunday. Meanwhile, Frank de Boer, one of eight coaches making their debuts at a new club Sunday, got off to a losing start when Inter Milan lost 2-0 at Chievo while last season's runner-up Napoli hit back from two goals behind to draw 2-2 at Pescara. Donnarumma saved Andrea Belotti's penalty in the 96th minute to give Vincenzo Montella a winning start as he became the sixth man to sit in the Milan hot seat in the last two-and-a-half years. Gian Piero Gasperini's first game with Atalanta ended in a 4-3 defeat at home to Lazio. Genoa, in its first game under Ivan Juric, beat promoted Cagliari 3-1 while Juric's former club Crotone, playing its first-ever Serie A game, lost to a late Mattia Destro goal at Bologna. PSG blanks Metz Defending champion Paris Saint-Germain overcame a frustrating first half to beat promoted Metz 3-0 Sunday and move level on points with Lyon and Nice at the top of the French league. Striker Edinson Cavani, winger Angel Di Maria and left back Layvin Kurzawa all missed good chances in the first half. Meanwhile, Marseille failed to recover from conceding an early goal as it lost 2-1 away to Guingamp. — Agencies