Southampton stepped up the pressure on npower League One's pace-setters with high-scoring wins.
The Saints ran riot at Oldham, scoring six goals without reply to move second in the table. Alex Oxlade-Chamberlain set them on their way inside 10 minutes but it was when keeper Ben Amos gifted a second to Adam Lallana (38) that the floodgates opened.
The in-form Guly made it 3-0 (52), Richard Chaplow scored a fine fourth (69), Rickie Lambert turned in Oscar Gobern's shot (74) and Lee Barnard completed the rout (86).
Fellow promotion hopefuls Huddersfield triumphed 3-2 after a thrilling start to their home clash with Plymouth. Joe Mason's brace put Argyle 2-0 up inside 15 minutes but the 10th-minute dismissal of Curtis Nelson was to have dire consequences.
Town surged back to lead after little more than half an hour, Kari Arnason's own goal (18) setting them on their way before Jordan Rhodes' 25-yard strike (29) and Peter Clarke's close-range finish (32) gave them a lead they never relinquished.
Managerless Peterborough boosted their play-off hopes with a last-gasp 2-1 win over Brentford.
Grant McCann's penalty gave Posh a fifth-minute lead but Marc Laird levelled (74), only for Jonathan Obika to grab a stoppage-time winner.
Bottom club Walsall gained a creditable draw at Bristol Rovers. They led through William Grigg's early goal but were pegged back by two goals in a minute early in the second half from Will Hoskins and substitute Jo Kuffour.
Aaron Lescott, however, earned them a point with a goal seven minutes from time.
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