Assured Alan Stubbs has written off Rangers' title possibilities, insisting Celtic have dethroned their Glasgow rivals after derby day victory.
Aaron Ramsey's early opener was overturned by targets from Tom Rogic and Cameron Carter-Vickers at Ibrox, incomes bragging rights and doubtlessly the league trophy come Might.
Defeat in Govan leaves the present Premiership champions six factors off the tempo heading into the ultimate six video games of the marketing campaign, with their rivals additionally having fun with a sizeable purpose distinction benefit.
Captain Callum McGregor and his aspect are on target to carry the trophy in Might only a 12 months after Rangers ended 9 years of dominance from their cross-city rivals.
And former Parkhead defender Stubbs could not resist a swipe at Gio van Bronckhorst's males following their 2-1 defeat.
He hailed the efficiency of the defence to maintain out relentless Rangers stress within the closing stage of Sunday's conflict.
Stubbs posted on Twitter: "Celtic nice defensive efficiency right this moment and really resilient!! Title wrapped up now.
"The reign of Rangers was very brief lived however Celtic have confirmed what champions do!!"