Hetmyer scored 18-ball 28 while batting at No. 7 to take DC over the line with two balls to spare.
Chasing 137 to win, the Capitals were reeling at 99/6 after 15 overs and amid the pressure situation, Hetmyer rose to the occasion while batting at No. 7.
The southpaw added a crucial 36-run stand for the seventh wicket with Akshar Patel and stayed unbeaten on 28 off 18 balls to take DC over the line with three wickets in hand and two balls to spare.
"I am enjoying playing the role of being a finisher, to be honest. I am trying to be more open to different challenges. Playing for the West Indies, is about batting in the top-four, here it is a different challenge for me and it has been really fun," Hetmyer told teammate Ashwin in a video posted on iplt20.com.
"At first, I was pissed and then it was like for the team. Whatever the team requires, we will do that. At first, I thought you are going to take Moeen Ali out, to be honest, I know you are very well known for slog-sweeping. I was surprised to see you nudging it around," he added.
In the last over of Delhi’s innings, the second delivery bowled by Dwayne Bravo landed miles outside off and it did not even hit the pitch. However, the on-field umpire called it wide and everyone was shocked to see the delivery not being deemed as a no-ball.
"I honestly thought that was a no-ball. The umpire said that it was not a no-ball because it passed the second line, something like that. I guess I have to google about it," said Hetmyer.
With this victory, DC pipped CSK to attain the top position on the IPL 2021 points table. They will take on Royal Challengers Bangalore (RCB) in their last league match on Friday (October 8) in Dubai.
(With ANI inputs)