Cup dream over for Brora and Fraserburgh despite spirited showings
Brora led League Two Stranraer through Dale Gillespie's 26th-minute penalty.
But Ayrton Sonkur, who conceded the spot-kick, headed an equaliser two minutes from time.
Former Rangers and Hibs youngster Matt Yates fired the visitors ahead early in extra time and Thomas Orr wrapped up a 3-1 win.
Broch beaten after leading Gable Endies
Fraserburgh were leading League One Montrose 2-1 after a Gary Harris penalty and Scott Barbour cancelled out Chris Mochrie's opener.
But goals from Graham Webster, Russell McLean and Lewis Milne secured a 4-2 win for the Gable Endies.
Bully Wee KO Ayr, Morton survive scare
There was a surprise at Ayr, who were knocked out 1-0 by League One Clyde, courtesy of Barry Cuddihy's strike.
The Honest Men’s Championship colleagues Morton scraped past East Fife 2-1 thanks to an extra-time winner from Robbie Muirhead.
Kevin Smith fired East Fife ahead early in the second half but they were denied victory by Sean McGinty's stoppage-time penalty.
A message from the Editor:
Thank you for reading this article. We're more reliant on your support than ever as the shift in consumer habits brought about by Coronavirus impacts our advertisers.
If you haven't already, please consider supporting our trusted, fact-checked journalism by taking out a digital subscription.
Want to join the conversation? Please or to comment on this article.