Real Zaragoza were denied a vital victory at home to Osasuna when Roversio cancelled out Helder Postiga's late strike.
The home side were the more enterprising team at La Romareda and were twice denied by the woodwork as they battle to avoid relegation from La Liga.
Postiga diverted a Luis Garcia free-kick goalward, which beat the keeper but not the bar, after 27 minutes.
Zaragoza again went close three minutes after the interval when Angel Latifa's left-footed shot came back off the post.
Postiga looked to have claimed all three points when he opened the scoring after 86 minutes with a fierce long-range effort.
However, Osasuna snatched a point from the jaws of defeat when Roversio converted Alvaro Cejudo's corner two minutes later.
