Internacional and Fluminense play out a goalless draw at the Beira-Rio
Much of the game was contested in the middle of the park, and it seemed both sides were more concerned about not conceding rather than getting themselves ahead in the tie.
Arguably the best chance of the match came on the hour mark when the referee awarded Inter a penalty for Edinho’s blatant foul on Leandro Damião, but Jésus Dátalo was denied by former Liverpool shot-stopper, Diego Cavalieri.
Fluminense rarely threatened the Porto Alegre side's goalmouth, but they did have a few opportunities, most notably when Thiago Neves saw his well struck effort sail inches over the crossbar midway through the first-half.
Internacional had enjoyed slightly more possession after the interval but struggled to find a way past a solid Tricolor Carioca defence.
In stoppage time Jô had a great chance to win the game for the Colorado when the ball fell to his feet in the box, but the former Manchester City striker struck the woodwork, much to the disbelief of the home fans.
A goalless draw means Fluminense will go into the second leg with a slight advantage because they will play hosts to Internacional at the Engenhão.
INTERNACIONAL: Muriel; Nei, Rodrigo Moledo, Índio, Kleber (Fabrício); Sandro Silva, Guiñazu, Tinga, Dátolo (Jô), Dagoberto (Jajá); Leandro Damião.
FLUMINENSE: Diego Cavalieri; Bruno, Anderson, Gum, Carlinhos; Edinho, Diguinho (Jean), Thiago Neves (Lanzini), Deco, Rafael Sobis (Marcos Júnio); Fred