"It was one of those goals that's invariably a goal"

This quote by Denis Law is referring to a goal that was scored in a soccer match. He is indicating that the objective was so great that it was unavoidable that it would be scored. He is expressing affection for the ability of the gamer who scored the objective, as it was so well performed that it was nearly specific to be effective. He is also suggesting that the objective was so excellent that it was practically a certainty that it would be scored.

Denis Law is praising the gamer who scored the objective for their skill and technique. He is recommending that the goal was so well-executed that it was nearly a certainty that it would succeed. He is also implying that the objective was so outstanding that it was practically a guarantee that it would be scored. This quote is a testimony to the skill of the player who scored the goal and the admiration that Denis Law has for them.