The hosts started the game so fiercely as early as after just eight minutes when Leandro Spadacio leite's unstoppable strike past the outstretched hands of Al Orooba's goalkeeper Abdalla Yousif to give the lead for Kalba.
The hosts heaped their pressure to double the lead and they should have done so when Mehdi Ghayedi's first-time half-volley was just wide of the near post.
Al Orooba showed resilience in the last five minutes of the first half, taking possession, but they failed to pose a real threat to goalkeeper Sultan Al Manthar, as the first half ended in favor of Kalba.
Against the run of the first ten minutes of the second half, Kalba was awarded a penalty kick after Damilare Salaudeen brought down Mehdi Ghayedi, prompting the referee to point to the spot.
Daniel Bessa successfully converted from the spot four minutes before the hour mark to cement the hosts lead.
Khorfakkan's response came very quickly. Mohammad Reza was tied up inside the box and latched the ball into the back of the net, but the goal was canceled due to an offside.
A few minutes later, Kalba's goalkeeper was the hero as he parried out Sinisa Jolacic's strike from the outside of the box.
Despite Khorfakkan's dominance in the game during the second half, Kalba managed to kill the match and scored the third goal.
Mehdi Ghayedi was the architect again as he pounced on a misplaced pass from Al Orooba's player Appolinaire Kack as Ghayedi cut inside the box and unselfishly squared the ball to Bessa, who tapped the ball into an empty net, grabbing his brace in the game in the 75th minute.