The Leeds head coach has been discussing the 31-year-old striker.
However, the Italian visibly struggled at Vicarage Road and drew criticism from a number of fans after the 1-0 loss.
The Scot told LUTV: "I thought Antenucci gave us a real spark."
Evans also praised Toumani Diagouraga and Liam Bridcutt for their midfield displays - but his assessment seemed far more accurate here as the pair shone for Leeds once again.
As for Antenucci, though, the fact the Italian is out of contract in the summer is clearly playing on his mind.
Leeds supporters criticised the 31-year-old en masse on social media and it's clear he doesn't offer United enough up front.
Chris Wood has been missed through injury but, even with the New Zealander leading the line, Leeds have often lacked a cutting edge.
Overall, United worked hard against Watford. But some poor individual displays let them down, as well as their play in the final third.