Zhè chǎng bǐsài wéiyī de quēhàn jiùshì guānzhòng tài shǎo.
The only shortcoming of the match was the small audience.
Tips
usage
缺憾 frames a regret as something objectively missing or imperfect, while 遗憾 (yíhàn) is the more personal, emotional 'I regret it.' A film can have a 缺憾 (a flaw); you yourself feel 遗憾.
