League One leaders Leyton Orient trail Preston North End 1-0 at half time, courtesy of a 33rd-minute Joe Garner volley.
The visitors started the brighter of the two teams and were unfortunate not to take the lead in the early stages, as Paul Gallagher - who bagged a hat-trick in the 6-0 thrashing of Barnet last weekend - sent a free kick narrowly wide.
Gallagher went close again with a dipping volley, before Lilywhites boss Simon Grayson watched on as the pressure paid dividends.
Garner, starting in the absence of the suspended Stuart Beavon, found himself on the end of a Keith Keane cross, before expertly volleying past Orient goalkeeper Jamie Jones to give his team the lead shortly after the half-hour mark.
Russell Slade had to wait 45 minutes to watch his team register a shot on goal, as Dean Cox was the recipient but his effort flew into Row Z.