Aberdeen tightened their grip on second spot in the Scottish Premiership with a 1-0 win over Ross County at Pittodrie.
Sky Sports Scotland's commentary team of Ian Crocker and Andy Walker take you through all six fixtures this weekend.
Jamie Walker missed a 74th-minute penalty as Hearts drew 1-1 at home to Inverness Caledonian Thistle.
Tommy Wright insists his focus remains solely on St Johnstone as he finds himself among the leading contenders for the Rangers job.
Aberdeen and Partick joined Celtic in the quarter-finals of the Scottish Cup after narrow wins over fellow Premiership sides.
St Johnstone striker Steven MacLean has signed a one-year contract extension at McDiarmid Park.
Substitute Moussa Dembele scored a hat-trick as Celtic extended their unbeaten run to 29 games with a 5-2 win at St Johnstone.
Brendan Rodgers admits Celtic were lucky to receive the penalty that inspired a comeback in their win at St Johnstone.
Live updates as runaway Scottish Premiership leaders Celtic travel to St Johnstone. Live on Sky Sports 5 HD.
Tommy Wright says St Johnstone are capable of "a surprise result" as they prepare to host Celtic on Sunday, live on Sky Sports.
Celtic assistant manager Chris Davies expects a tough afternoon when his side face St Johnstone on Sunday.
Sky Sports Scotland's commentary team Ian Crocker and Andy Walker take you through all six fixtures this weekend.
St Johnstone took all three points at Firhill after a hard-fought 1-0 Ladbrokes Premiership victory over Partick.
Sky Sports Scotland's commentary team Ian Crocker and Andy Walker take you through the five fixtures this mid-week.
The SPFL has confirmed the Premiership winter break will be retained for next season.
Kris Boyd scored the quickest goal in Scottish Premiership history as Kilmarnock beat Ross County 3-2 at Rugby Park.
Sky Sports Scotland's commentary team Ian Crocker and Andy Walker take you through this weekend's fixtures.
Celtic equalled a 50-year club record after beating St Johnstone 1-0 courtesy of Dedryck Boyata's second-half header.
Leigh Griffiths is back in contention for the visit of St Johnstone after missing Sunday's Scottish Cup win over Albion Rovers.