Jack Harrison’s late winner helped Marcelo Bielsa’s side climb to the top of the table.
Former Leeds United player Noel Whelan has heaped praise on Alioski and Costa after the game. Both players changed the game after coming on as substitutes.
Speaking to BBC Radio, he said: “I’ve got to compliment Bielsa on his substitutions tonight. They’ve all been very, very positive and he’s been trying to win the game. He brings on Costa who’s been fantastic this evening. Then he brings on Alioski who’s been fantastic when he came on. They’ve added a new dimension to the game.