 This attracted the attention of Tigrene, an Oslo-based club who had a strong team but nowhere to play, and the two clubs agreed to a merger.Frisk thus gained entry into the highest division for the first time in twenty years and were one of the leading teams in Norway during the 1970s, winning the Norwegian Championship twice.The club's fortunes then began to fade until reaching a low point in 1994, when they spent one season playing in the second tier.