Historical clue formulations

• Less than one's best, in sports lingo — 2023-09-10
• It's not one's best performance — 2023-05-19
• Mediocre effort — 2023-03-16
• Subpar athletic effort — 2021-07-04
• Not one's best effort, in sports — 2018-05-08
• Not one's best effort, in coachspeak — 2016-09-02