Mitch Evans says Jaguar's request to slow down towards the end of ABB FIA Formula E's Rome race was the "last thing you want" while he defended from Andre Lotterer.
As the race approached its final minutes, Evans, who was leading Lotterer after scraping his way by the DS Techeetah driver at the halfway stage, was asked to back off by his engineer.
This was to avoid adding an extra lap to the race's total and risk running out of energy due to FE's 45-minute plus one lap format.
"[I was] like, 'What? That is not what I need right now'," Evans told Autosport.
"I had one stressful moment missing the attack mode [activation point], which wasn't needed.
"To need to slow down when you've got someone like Andre right up your rear wing is the last thing you want.
"But we had a lot of pace, and I could've easily gone with the attack mode [once I'd got it], could've upped the speed and extended the race, and destroyed everything for everyone because none of us would've finished.
"It was extremely important to deal with that communication, but it was a bit of an unusual situation, and I've never ever been in that in my life.
"We managed it well, but it was a bit bizarre."
Evans' victory in Rome was the first of his FE career and the maiden win in the category for Jaguar.
The marque is also celebrating its first major international series win since the 1991 World Sportscar Championship at the Nurburgring, although it did take a pair of IMSA Sportscar Championship wins with Davy Jones at Road Atlanta and Mid-Ohio in '92.
Jaguar entered FE at the start of the 2016/17 season, but endured a disastrous campaign with an uncompetitive package and finished 10th in the teams' standings.
It improved to sixth last season, with Evans claiming its first podium with third in Hong Kong - although only after race winner Daniel Abt had been disqualified - and its first pole, which came in Zurich.
Evans fought for the win in Rome last year before falling out of contention as he ran out of energy, and also fell into the clutches of cars with better efficiency performance while leading in Zurich.
After securing the 2019 Rome win, team principal James Barclay outlined his "relief" and emotion.
"This is a group of people capable of delivering these results," he said.
"So absolutely relief, of course, because there is not a team in the pitlane that doesn't have pressure - everyone has pressure.
"As a young team, we've learned a lot of lessons.
"This is not a flash in the pan - there has been some genuine bad luck we've had and there's been some areas where we haven't given ourselves the best luck by maybe not making the right decisions at times.
"So that's part of why the emotion is there - we've felt this has been coming for a long time."