Cristiano Ronaldo did not have the best of nights on Tuesday evening as he left Hampden Park frustrated by a resolute Scottish defense that gave up only a point after a 0-0 stalemate. <br /><br />Scotland went into the game without a win in their UEFA Nations League campaign, up against Ronaldo and Co who were top of Group A1 with three wins from as many games. <br /><br />Yet the favorites were unable to break through Steve Clarke's impregnable backline, with Portugal enjoying 70 percent of the ball throughout the game. <br /><br />However their talisman - looking for his 134th international goal - put in a performance scarcely recognizable for the five-time Ballon d'Or winner, or his exploits of yesteryear. <br /><br />The 39-year-old was treated to the traditional pantomime boos when seen remonstrating to referee Lawrence Visser and was visibly frustrated throughout. <br /><br />His display was summed up by a bicycle attempt inside the first half - with his overhead kick goal against Juventus one of the most iconic goals of all-time - which flew well wide, rather than spectacularly netting Portugal goal No 134. <br /><br />In total, Ronaldo had four shots, including a header from inside the box that was well off the mark and a sliced effort late on, with only one of them on target in a game that he will be keen to move on from. <br /><br />Ronaldo was irate at the final whistle when he was denied the chance to take a corner with the clock having ticked past four added minutes. He ranted to the referee and gave the home fans a double thumbs-down before storming off the pitch.<br /><br />However, he was not the only Portugal star seemingly less than impressed by the standard of officiating on the night. <br /><br />'Refereeing? If I were to give my honest opinion...' said Bayern Munich's Joao Palhinha after the game. <br /><br />'I don't want to mince words, it's better to remain silent. For those who understand, half a word is enough. But that's not why we didn't win the game. I would like to stress that we are still in first place and I hope we can maintain this good streak.<br /><br />'We deserved to get something more out of this game, even though it's always difficult to play in Scotland.<br /><br />'Our dominance in the game was clear. We deserved more than a draw. But I would like to highlight the work we've been doing. We're still in first place and we hope to secure qualification in the next two games, which will be difficult.'<br /><br />Earlier on the game was marred by another fan seemingly looking to take their picture with Ronaldo after forcing their way onto the field. <br /><br />Ronaldo is hardly a stranger to pitch invaders looking to grab a selfie with him, though on this occasion the Hampden Park stewards managed to stop the individual before they reached the forward. <br /><br />The hosts also had chances on a night when they were plagued by careless turnovers as Scott McTominay narrowly missed with a header before the game was five minutes old.<br /><br />Ben Doak laid the ball back to Andy Robertson and the captain found the unmarked McTominay with a pinpoint cross but the midfi
