Rafael Nadal said his game needed more consistency after his return from injury as the Spaniard reached the final of the Melbourne Summer Set 1 on Saturday, but added that he was delighted with the attitude he had shown this week. The 20-times major winner was made to toil by the aggressive Finn Emil Ruusuvuori in a 6-4 7-5 win at the Rod Laver Arena that witnessed some heavy hitting from the baseline by both players. “Of course I need to do a lot of things better on court, but the only thing that I am not missing is that positive attitude—don’t get frustrated when things are not going the way I wanted,” said Nadal, playing his first competitive tournament since August. “It’s normal that I’m having mistakes. It’s normal that sometimes I am a little bit slower than usual. But it’s a process, and I always believed in the …