St Johnstone moved to the top of the SPFL Development League with a 1-0 win over Motherwell at the Excelsior Stadium on Wednesday evening.
Greg Hurst got the only goal after 32 minutes to take Saints a point ahead of Celtic, who have two games in hand.
Third-placed Hamilton Accies racked up a 4-0 win over Rangers at Dumbarton with goals from Steven Boyd (2), Marc Kelly and Ryan Tierney.
Reigning champions Aberdeen saw off Dundee 4-1 at Balmoor, helped by a double from Joe Nuttall. Josh Parker and Scott Wright also netted for the Dons, with Ryan Gemmell on target for the Dark Blues.
Inverness CT edged out Dundee United 3-2 at St Andrews with goals from Ali Sutherland, Nat Wedderburn and Lewis Horner. Ola Adeyemo and Justin Johnson scored for United.
Kilmarnock and Partick Thistle shared the spoils in a 3-3 draw at Rugby Park. Lee Ashcroft, Kris Boyd and Dale Carrick scored for Killie, with Kevin Nisbet (2) and Edin Lynch replying.
It finished 2-2 between Hearts and Falkirk at Ochilview on Monday. Kevin O'Hara and Ryan Blair scored early on for the Bairns but Dario Zanatta and Callumn Morrison struck in the second half.
Hibernian beat Dunfermline 1-0 at Ainslie Park on Thursday with an early Jamie Insall goal.
Stirling Albion stay two points clear of Raith Rovers in the Development League East after a 3-1 win over East Stirlingshire, with Rovers beating Stenhousemuir 4-1.
Morton lead the Development League West on goal difference from Ayr United ahead of Thursday night's trip to Queen of the South.