Leeds United were beaten 1-0 by Watford in FA Cup action at the weekend.
Leeds and Watford went in level at the break, with the score locked at 0-0.
Indeed, Evans says that Leeds had the better of the first period and he was very positive with his players at the break.
The Watford dressing room, on the other hand, was a more angry place. And Sanchez Flores’ team talk seemed to have the desired impact as Watford put in an improved performance in the second 45 minutes.
The Hornets scored after Scott Wootton diverted a cross into their own net, and they rarely looked threatened during the contest.
And Evans admits that Leeds’ display in the second period simply was not good enough against top flight opponents.
"We were positive at half-time," he said. "We were the better team, so you’re going to be positive. I said to them at the end, that it’s a sad, sad to way to go out the cup, but I go away thinking about how hard we worked.
"I also think we didn’t do the same in the second half as we did in the first half, we never got back to those levels.
"Watford stepped up, and we heard loud voices across the tunnel so we knew what was happening over there, but we gave sloppy passes away and you don’t get it back if you do that in the Premier League."
Leeds' defeat to Watford has extended their winless run of three matches, and it continued to highlight the problems they are experiencing going forward.
The Whites have scored just four times in their last seven matches, and they only managed one shot on target at Vicarage Road.
Watford will now come up against the winner of Hull City’s replay against Arsenal in the quarter-finals of the FA Cup.