Manchester United manager Ralf Rangnick says Cristiano Ronaldo’s performance as he scored a hat-trick in their 3-2 win over Tottenham Hotspur was the best since he arrived at Old Trafford.Manchester United manager Ralf Rangnick says Cristiano Ronaldo’s performance as he scored a hat-trick in their 3-2 win over Tottenham Hotspur was the best since he arrived at Old Trafford.