The phrase "shaky performance" means that someone or something did not do well and seemed unsteady or uncertain in their actions or abilities. Full definition
Real Madrid coach Zinedine Zidane has suggested his side are well - prepared for their upcoming Champions League semifinal with Bayern Munich despite a series of shaky performances in La Liga, including Wednesday's 1 - 1 home draw against Atheltic Bilbao. (espn.in)
Sagna: [6/10] Another slightly shaky performance from Sagna, but he did what needed to be done — with no errors. (theclockend.com)
The Reds recently angered their fans when they tied down current first choice Simon Mignolet to a new five - year deal, but the Belgian international has not convinced the club that he is a sound investment since with a series of shaky performances between the sticks. (caughtoffside.com)