Jamie Moul carded a joint-course record first round of 64, eight-under-par, to lead at his home club of Stoke By Nayland on the European Challenge Tour.
Moul recorded his first professional win at the Acaya Open two weeks ago and is fourth in the tour rankings.
A top-20 finish for the 26-year-old would see the Colchester-based golfer move on to the main European Tour.
"He should have every chance of doing that," Moul's coach Kevin Lovelock told BBC Radio Suffolk.
"He's found a little form over the last month, he's been playing really well this year to be honest.
"He's had a few issues with his putting, but he seems to have sorted that all out."
The former amateur world number one followed victory in Acaya with a second place finish at the Credit Suisse Challenge, and he heads into the clubhouse on day one at Stoke By Nayland leading the pack.
It is the second year in succession that the Gainsborough course at the Suffolk club has hosted a Challenge meeting.
"It's great for East Anglia to host an even of this level, we tend to get a little bit lost out here," added Lovelock, who is head pro at Stoke By Nayland.
"It's a real boost for the area."