The phrase "assertive performance" is correct and usable in written English.
It can be used in contexts discussing behavior, communication, or actions that demonstrate confidence and decisiveness.
Example: "Her assertive performance during the presentation impressed the entire team and showcased her leadership skills."
Alternatives: "confident execution" or "decisive action".
There was a supremely assertive performance from Wenger's own record signing Mesut Özil.
He came out aggressively, giving his most assertive performance to date, particularly within the debate's first half hour.
Yan Huichang presided over a colorful, assertive performance by the Hong Kong Chinese Orchestra, with its pure-toned strings, honking winds and myriad percussion instruments.
The opening Schubert set, for example, began with the high drama of "An Schwager Kronos," which Sir Thomas and his pianist, Malcolm Martineau, gave an energetic, assertive performance.
There were, however, positives to take from an assertive performance in which Watson was more aggressive from the back of the court and more creative with her shot-making.
Marie is a woman who favours self-erasure, loves her grey gallery uniform, courts boredom, avoids risk, prefers not to shine; yet the novel she narrates is an original and assertive performance with more than a hint of the baroque.
She has been able to do what Thompson has not -- deliver her most assertive performances in the most crucial races.
(Among the many children the two little Spanish-dance girls, in frothing skirts and mantillas matching those of their adult companions, gave the most gleefully assertive performances of the show).
It's one of her wildest, most assertive performances, and it has to be, because going up against Barrymore in full cry is a formidable challenge for a relatively unknown young actress: subtlety wouldn't have gotten her very far.
The runners up in Group B – and Wales have enough about them to be confident of eking out sufficient insurance with assertive performances against Slovakia and Russia – will have an immediate appointment with the second placed team in the group featuring Portugal, Austria, Iceland and Hungary.
The widening chasm between GOP establishment leaders and Trump, who is now emboldened given his assertive debate performance Sunday night, has moved the party into uncharted territory in the final weeks of an already volatile and unpredictable presidential contest.
