Even Kris Boyd could not see Rangers safely through to the last four of the Scottish Cup as Partick Thistle earned a well-deserved 1-1 draw at Ibrox.

The striker came to the rescue to level Damon Gray's opener but could not find the goal that would snuff out the threat of the battling Irn-Bru First Division outfit. It was the second cup shock in 24 hours after Celtic were dumped out by Aberdeen and both teams now have to do it all again in the replay at Firhill to earn the right to face St Johnstone in the semi-finals.

Partick grew in confidence as the half progressed and had an excellent opportunity to take a shock lead midway through the first half. Mark Roberts found Gray in plenty of space but he was denied by a timely save from Allan McGregor, who parried the well-struck shot to safety.

Rangers piled forward in numbers at the start of the second half in a bid to break down Partick's stubborn resolve and only the woodwork prevented Steven Naismith from breaking the deadlock when his header from a Steven Davis cross clipped the crossbar.

Ibrox was stunned into silence when Partick surged into the lead after 67 minutes. Gary Harkins slipped a great ball through to Gray who gleefully despatched past McGregor from inside the box.

The goal sparked wild celebrations among the vocal travelling support but Rangers were back on level terms just two minutes later as Boyd once again proved to be in the right place at the right time. Thistle goalkeeper Jonathan Tuffey was forced to parry from one of his own defenders, sparking a goalmouth scramble with Boyd lurking to bundle home at the far post.

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