During Maraenui's 7.5-2.5 win against Dannevirke on Saturday Mitchell beat Brad Truesdale 2 up. He carded a 2 and 1 victory against Hugh Harrison during yesterday morning's 8.5-1.5 win against Takapau and was in commanding form during a 6 and 5 win against Nick Radonich as Maraenui walloped Waipukurau 9-1 in yesterday afternoon's round.
The final four rounds will be played at the Napier club on November 15 and 16.
"I used to hate playing at Napier when I was younger but I play the Waiohiki course pretty well now," Mitchell said.
He will have to if he wants to become a first time recipient of the top No 1 trophy.
Another unbeaten No 1 is Hastings kingpin Stu Duff and his high levels of composure in pressure situations have been well documented over the years.
Mitchell pointed out the field had a variety of conditions to deal with at the weekend, dry and firm on Saturday and extremely wet yesterday.
With no more tournaments until the next rounds of the Greenwood Cup Mitchell will have plenty of time to hone his game.
Maraenui will take a one- point lead over Napier into the fourth round and Hastings are another point behind in third place.