A stoppage-time equaliser from Ben Gordon earned Alloa a 1-1 draw at Dundee on Saturday in Barry Smith's first game as manager.
Ryan Conroy's penalty had John Brown's men on course for top spot in the Championship but the Wasps hit back for an important point.
Leaders Falkirk came from behind to draw 1-1 at home to bottom club Morton, with Mark Millar's spot-kick cancelling out Dougie Imrie's opener.
Third-placed Hamilton Accies drew 3-3 with Dumbarton at New Douglas Park. A James Keatings goal was equalised by Jordan Kirkpatrick and Stephen Hendrie's own goal had the Sons in front. Keatings levelled and Jason Scotland made it 3-2 Accies late on, only for Chris Kane to have the final say for Ian Murray's men.
Second-half goals from Mark Durnan and Derek Lyle saw Queen of the South move into the top four with a 2-1 win at Livingston, who had gone ahead through Marc McNulty's penalty.
Kane Hemmings scored the only goal with 20 minutes left as Cowdenbeath beat Raith Rovers 1-0 at Central Park to move nine points clear of Morton.
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