The Basques were the clear favourites, however, conceded a late goal by Helder Postiga which seemed to be the winner, but Roversio equalized two minutes from time.
Javad Nekounam was one of his team's better players, especially convincing with his defensive work. The Iranian national team captain was subbed out a minute from time, shortly after Osasuna's equalizer.
Osasuna's Masoud Shojaei is still sidelined with a nagging foot injury with his return expected some time in spring.
In Beligium, possible future Team Melli player Reza 'Gucci' Ghoochannejhad finally returned to the starting lineup in St. Truiden's 2-2 draw against Anderlecht after two substitute appearances following an injury absence and immediately had a great impact.
The 24-year-old striker won an early penalty kick which he converted himself and had a great performance over 90 minutes, which earned him the "man of the match" title from the Jupiler League's official homepage.
Unfortunately a 90th minute equalizer denied bottom placed STVV a much needed victory.
It was Ghoochannejhad's eleventh goal of the season, which puts him in seventh position of the scoring chart, only two goals behind the second position, but already ten goals behind leader Jeremy Perbet.
In Germany, Ashkan Dejagah served a one-game suspension after picking up his fifth yellow card of the season during his great performance last week, but had much to cheer as Vfl Wolfsburg defeated Nuremberg 3-1 on the road.
In Russia, Alireza Haghighi once more remained on the stands as third goalkeeper in Rubin Kazan's 0-1 defeat to Kuban, keeping Rubin in sixth position of the table.
While Farhad Majidi scored two goals and assisted another in Al Gharafa's 4-1 win over Al Ahli in Qatar on Friday, Al Arabi captain Hadi Aghily helped his side to a clean sheet in a goalless draw against Al Kharitiyath.
Shortly after being eliminated from the Etisalat Cup in UAE, Al Wasl and Mohammad-Reza Khalatbari suffered another setback in UAE league on Thursday, suffering a 0-1 defeat to Al Jazeera which pretty much ended Diego Maradona's side's Asian Champions League qualification ambitions.