Wright who has got better as the tournament has gone on will have a quick turnaround with him playing tonight also but could set up an all Scottish final with Gary Anderson.
He spoke after his win over Whitlock and admitted he only got his focus when he got onto the stage.
Despite being clinical for him he believes he will still have to up it when it comes to the semi-finals.
"I wasn't really feeling it tonight until just before I went on stage and then I got my focus," said Wright, who will face Suljovic in Saturday's semi-final.
"I wanted a lot more tonight but I was struggling a bit in the heat which affected my darts. I've been practicing my finishing a lot so it was pleasing to be so accurate on my doubles.
"Simon is always capable of running off a number of legs so I had to keep my concentration to stay in front and keep him under as much pressure as I could.
"The main thing was I got the win but I will have to be better to win the tournament."
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