"It was one of those surfaces that produces such close matches. I believed we had a competitive total after the first half. I knew it would be a tricky chase after the powerplay overs as with such totals there are small margins.
"We have been in a position of strength before and haven't nailed it, today was another such day and that's a little bit frustrating," said Williamson after the match.
"We believed it was a winning total and it looked like it for a long time, they started well and had all the momentum, they had some quality players, as expected on this wicket we squeezed them back and got ourselves ahead, we weren't very clinical with the catching or in our bowling, we weren't great today. It wasn't our best performance, a few things needed to be changed and it could have been a winning total," said a disappointed Williamson.
He hoped the that the players would come out with better performance in the next season.
"We are building well as a franchise and the development process will have to continue," Williamson said.