Jordan Jenkins scored four goals as Glentoran beat amateur league side Drumaness Mills 5-0 to set up an Irish Cup quarter-final with Larne.
In a tie rescheduled from 7 Febraury due to waterlogged pitch at the Oval, the Drumaness defence was finally unlocked in the 24th minute as Jenkins fired the Glens in front with a right-footed strike from just inside the box.
Jenkins grabbed his second of the evening in the 37th minute as he fired home from a central position on the edge of the box after a clever pull-back from Ben Gallagher.
The Glentoran striker completed his hat-trick just before the break as he bundled home after Josh Daniels flicked on a Danny Amos corner.
Gallagher and James Singleton both hit the woodwork for Glentoran, the latter of which was pushed onto the crossbar by goalkeeper Aaron Carberry.
The hosts hit the woodwork on multiple occasions early in the second half as they went in search of a fourth, and finally found it in the 79th minute, once again courtesy of Jenkins.
Jenkis' fourth in the 79th minute was arguably the standout goal of the night as he fired home with a precise curling effort from a tight angle into the top corner.
Cal Weatherup put the icing on the cake as he won and converted a penalty, and Drumaness had a late consolation goal ruled out for offside after Reece Doyle finished high into the net.
A quarter-final date with Larne awaits for the Glens, whose hopes of a first Irish Cup triumph since 2020 remain alive as they progress into the final eight.
"It was difficult so fair play to Drumaness, they put up a really good fight and had some good moments in the game," Glentoran assistant manager Tim McCann said.
"Their travelling support was absolutely fantastic so it was something to be proud of.
"All you can do is beat the team in front of you, we weren't taking this game lightly but you can't ask for much more than 5-0 and into the quarter-final."