Jose Costa coach Massimiliano Alegre has confirmed that Costa Costa made the difference in the 3-1 win over Bologna in the Italian league on Saturday.
Juventus managed to beat the hosts to a 7-0 win over Napoli.
"Things have not been decided yet, but we took a big step in the championship title, in numbers, we are 3 points from winning the title, we played a good game," Alegre said after the meeting, highlighted by La Gazzetta dello Sport.
"Douglas Costa is one of the players who can make a difference during the matches. He left him first on the bench and then went to the field and led the team to victory."
"Paolo Debala was not in his usual style. The game was closed. It was difficult for any player, because the space was very tight, but in the second half, the Argentine star was good."
"We will play against AC Milan on Wednesday, in the final of the Italian Cup, the Rossoneri is doing great things recently, but we will play to win."
"After the cup final, we will think again in the tournament, the seventh consecutive title, which will be the most suffering, because Napoli did extraordinary things in the championship."