Celtic began their defence of the Scottish Premier League title in confident fashion with a comfortable 4-1 home win over Kilmarnock.
A brace from Maciej Zurawski - along with strikes from Jiri Jarosik and Shunsuke Nakamura - gave the Old Firm club a perfect start to the new SPL campaign at Parkhead, with Steven Naismith striking a late consolation for Killie.
The Bhoys started confidently in the noon-hour kick-off, with Nakamura and summer signing Kenny Miller both missing the target in the early stages.
To their credit, Kilmarnock came into the match and Naismith brought a fine double save from Celtic goalkeeper Artur Boruc before Paul Di Giacomo's fine run saw his close-range shot deflected away.
The Bhoys broke the deadlock on 25 minutes with their first shot on goal, as Miller's pinpoint pass set up Zurawski to finish with a first-time strike.
Celtic's Stephen McManus then did well to clear a Kilmarnock corner, as Naismith was poised to pounce, before Jarosik found the scoresheet on his SPL debut seven minutes before the break. Some neat football saw Zurawski play in a fine far-post cross that Jarosik was able to knock home off his shoulder for 2-0.
The second half saw Celtic in control, with Zurawski, Aiden McGeady and Stilian Petrov all shooting wide of goal.
Gary Caldwell was denied a goal after his header was cleared off the goal line by Garry Hay, but Gordon Strachan's side increased their lead with a quarter of an hour remaining.
Nakamura's well-executed free kick strike curled over the Kilmarnock wall before beating Graeme Smith for 3-0.
Three minutes from the end, Naismith denied Boruc a clean sheet with a close-range volley after Celtic had failed to clear their lines, but Zurawski got his second and Celtic's fourth in injury time for a comfortable win.
Hearts left it late to start their domestic season on a winning note, as The Jambos defeated ten-man Dunfermline Athletic 2-1 at East End Park.
Building on their midweek win in UEFA Champions League qualifying, Roman Bednar gave Hearts the lead on the quarter hour mark when he knocked home Michal Pospisil's cross.
The Pars pulled level on 62 minutes when Stephen Simmons headed home Scott Muirhead's corner from the right, but Hearts restored their lead with 12 minutes remaining through Pospisil.
He reacted quickest to Bruno Aguiar's free-kick that came off the Dunfermline crossbar before knocking the ball home.
Two minutes after going behind, Dunfermline had Andy Tod sent off for a second bookable offence for a challenge on Julien Brellier.
SPL new boys St Mirren started the new season in the best possible fashion with a creditable 2-1 win at Inverness Caledonian Thistle.
Following a goalless first half in the Highlands, Caley Thistle claimed the lead three minutes after the restart when Craig Dargo dove to head home John Rankin's curling cross.
The lead lasted just seven minutes, as John Sutton brought The Buddies level on the rebound after Caley Thistle goalkeeper Mark Brown failed to hold Craig Molloy's initial shot, though team-mate Stewart Kean was also claiming the goal.
With a quarter of an hour remaining, Sutton struck the winner after he latched on to goalkeeper Chris Smith's long clearance and then hold off the challenge of Darren Dods before beating Brown.
Falkirk came from a goal down to defeat Dundee United 2-1 at Tannadice Park, with Barry Robson scoring the opener for The Terrors on 17 minutes.
Trinidad & Tobago World Cup man Russell Latapy levelled six minutes later for The Bairns with a free-kick strike before Liam Craig struck the winner just before the hour mark after good work from Latapy.
The only draw of the day came at Easter Road, as Hibernian came from a goal down to draw 1-1 with Aberdeen.
Stevie Crawford gave The Dons the lead on 19 minutes with a deflected turn-and-shot, but Dean Shiels earned an opening-day point for Hibs with a strike off the crossbar on 31 minutes.