St Mirren's 100 percent start to the SPL campaign is over following a hard-fought 2-0 loss to champions Celtic.
Newly promoted St Mirren won their opening two games, however their excellent start ended at Celtic Park.
Stephen McManus (pictured) broke the deadlock after 28 minutes and Celtic secured the points after 65 minutes through Stilian Petrov.
Hearts missed the chance to move top of the table outright after being held at home by fellow high-flyers Falkirk.
The Edinburgh side were humbled in midweek by AEK Athens and were unable to return to winning ways at Tynecastle.
Aberdeen maintained their unbeaten start to the new SPL season with a 2-0 success over Motherwell.
Darren Mackie was the match-winner for The Dons with goals either side of half time to secure the points.
Inverness Caledonian Thistle and Hibernian are both without a win three games into the season following a goalless draw on Saturday.
Dundee United will be happy with their point at Kilmarnock after finishing the contest with just ten men at Rugby Park.
Lee Miller was dismissed shortly before half time for collecting two yellows, although the visitors were able to claim a point.