Koltsov has three wins in a row so far and currently sits on six points. He began the day by edging past Keelan Kay in a deciding leg win but survived five match darts in the process.
It was back-to-back wins from there though again in a decider as he saw off Mike Warburton 5-4. He then edged past Tuesday's champion Andy Jenkins 5-3 as he moves clear.
Keelan Kay is currently second but with four points from his four games. Only Mike Warburton barring that has played more than two with one win and two defeats.
There will be 15 games a day which will be best of 9 legs with two Pools set to be involved as usual. It begins everyday as a result at 10:30 am running till 5:00 pm and sees live action continue.
Keelan Kay (87.93) 4-5 (87.16) Boris Koltsov
Michael Warburton (86.5) 3-5 (93.05) Keelan Kay
Boris Koltsov (90.64) 5-4 (88.08) Michael Warburton
Scott Mitchell (90.79) 5-2 (79.76) Keelan Kay
Andy Jenkins (84.95) 3-5 (90.74) Boris Koltsov
Mark Webster (89.54) 1-5 (90.79) Michael Warburton
Keelan Kay (93.03) 5-2 (73.15) Andy Jenkins
Boris Koltsov v Mark Webster
Michael Warburton v Scott Mitchell
Mark Webster v Keelan Kay
Scott Mitchell v Boris Koltsov
Andy Jenkins v Michael Warburton
Scott Mitchell v Mark Webster
Andy Jenkins v Scott Mitchell
Mark Webster v Andy Jenkins