Abuja – Celtic claimed their biggest ever win over Rangers at Ibrox in the final Old Firm derby of the season on Saturday.
Scott Sinclair netted an early penalty kick after Myles Beerman needlessly fouled Patrick Roberts, and Leigh Griffiths struck a spectacular second.
Callum McGregor rolled home to extend the advantage after the interval.
Dedryck Boyata headed in Griffiths’ swirling free-kick before Kenny Miller replied for Rangers and Mikael Lustig curled in the visitors’ fifth.
The News Agency of Nigeria (NAN) reports that Brendan Rodgers’ side remain unbeaten domestically this season, having also beaten Rangers in last weekend’s Scottish Cup semi-final match.
The win had set up a final date with Aberdeen and the chance to clinch Celtic’s first domestic treble since 2001.
Rangers — third in the league after a second 5-1 loss to Celtic this season — remain nine points behind Aberdeen, who lost 0-2 to St Johnstone later in the day.
Whatever Rangers’ plan was, it dissipated in double quick time.
It took Celtic just a single minute to cut through the home defence, McGregor being put in on goal.
Had McGregor looked outside him and rolled a pass to Griffiths then the striker would have had a tap in.
Instead, he took it on himself and was denied by a brilliant last-ditch block by Clint Hill.
It was a mighty let-off for Rangers, but it was just a reprieve on what was a thunderously sobering day for them.
The opening goal came after Beerman made a bad decision when diving in on Roberts while the winger was making his way out of the penalty box.
It was an error that was punished by Sinclair, the winger sending Foderingham the wrong way from the penalty spot.
