a tough act to follow

a tough act to follow

Someone or something so exemplary that it overshadows anything that follows. I don't know how Mel's replacement will be received by the staff. He was so admired and respected that he'll be a tough act to follow. That award-winning play will be a tough act to follow on Broadway.
See also: act, follow, tough
Farlex Dictionary of Idioms.

tough act to follow

 and hard act to follow
Fig. a difficult presentation or performance to follow or improve upon with one's own performance. Bill's speech was excellent. It was a tough act to follow, but my speech was good also. In spite of the fact that I had a tough act to follow, I did my best.
See also: act, follow, tough
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

a hard/tough act to ˈfollow

a person or a group that is so good or successful at something that it will be difficult for anyone else who comes after them to be as good or successful: The last head teacher achieved a lot — she’ll be a hard act to follow.
An act is one of several short pieces of entertainment in a show.
See also: act, follow, hard, tough
Farlex Partner Idioms Dictionary

tough act to follow

See hard act to follow.
See also: act, follow, tough
The Dictionary of Clichés by Christine Ammer
See also:
  • a hard act to follow
  • a hard/tough act to follow
  • hard act to follow
  • tough act to follow
  • How's this/that for (something)?
  • how's this/that for a...?
  • in a million
  • (something) in a million
  • hold (someone or something) up as an example
  • hold up as an example