Last Updated: Fri, 05 Jun 2009 11:14
Luke Donald admitted he got on a "hot streak" after shooting a 64 to lead the Memorial Tournament by three shots after 18 holes.
The Englishman was in inspired form, picking up eight shots in nine holes at Muirfield Village, and he sits at eight-under par, three clear of Jim Furyk, Ted Purdy, Jason Day and Thomas Aiken.
Steve Marino, Stewart Cink and Mark Wilson are a shot further back but it was a poor day for Donald's compatriots as Paul Casey finished one over and Justin Rose is unlikely to make the weekend with an eight-over 80.
Donald admitted that once you are in the 'zone' it is important to just keep playing and just see where the day takes you.
"I just got on a hot streak," he said. "Eight under through nine holes, that doesn't happen very often but when you get on that roll, it feels pretty good.
"So I just kept going and made some birdies."
Padraig Harrington struggled to a three over par 75, with Ian Poulter and Fiji's Vijay Singh also struggling on the same score.