Finch could barely contain his frustration as he crawled to 31 not out off 42 balls in Australia's seven-wicket win over Sri Lanka in Perth on Tuesday night.
The match will be fondly remembered for the Marcus Stoinis fireworks display at the death, with the allrounder cracking an unbeaten 59 off 18 balls in a knock that featured four fours and six sixes.
But Finch's scratchy performance did not go unnoticed, with former Test star Mark Waugh labelling it "torturous".
At one stage, Finch had scored four of 15 balls.
During a stretch of play in which he was totally bamboozled by paceman Lahiru Kumara, the 35-year-old quipped to the umpire: "Happy to take any ideas if you know how to hit that".
Things only got slightly better for Finch as his innings wore on.
He was dropped on 23, was lucky to survive a series of bottom and inside edges that only narrowly missed his stumps, and he shouted a frustrated "oh my god" at the death following yet another mistimed shot.
Finch's innings - at a strike rate of just 73.81 - was the slowest of any knock consisting of 40 or more balls in T20 World Cup history.
The under-fire right-hander has passed 50 in just one of his past 18 innings in official international matches, averaging only 11.88 in that time across all formats.
Finch's most recent score of note came in a warm-up match against India last week, when he scored 76 off 54 balls.
That match did not count towards Finch's official stats.
"My innings was unusual, it was poor. I just couldn't hit the ball," the skipper said, despite claiming the winning runs in the victory over Sri Lanka.
"It would have been nice if I could have kicked off earlier and made that chase easier."
Stoinis praised Finch for seeing out the win until the very end.
"That new ball was doing a lot. From what I could see from the boundary, it was definitely the hardest time to bat," Stoinis said.
"It was just important that he saw that through and was there to hit the winning runs."
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