Match photos provided by MW10 Sports Photography
The Williams brothers were the comeback heroes for Pennar Robins as Adam Phillips struck an extra time winner to send the visitors into the Senior Cup Quarter-Finals.
With both sides recently sharing a 2-2 draw in the league, this always promised to be a tasty cup fixture.
Tenby got off to the perfect start when Fraser Finlay fired home a 30 yard rocket into the top corner.
Finlay then turned provider to set up Jerome Mansbridge to make it two, giving Tenby a comfortable 2-0 lead at the break.
The hosts then had the chance to make it 3-0 from the penalty spot, only for Rory Williams to save Scott Ferney's spot kick.
The save revitalised the visitors who pulled a goal back in the 68th minute when Sean Edmundson set up Liam Williams.
Williams then equalised in the 77th minute, thanks to an assist from Kieran Smith, sending the tie into extra time with the scores level at 2-2 after 90 minutes.
Williams was involved once again as he set up Adam Phillips in the 115th minute to score the winning goal for Pennar to seal a fantastic comeback victory.
Photo Gallery (click to view in full)