The Reds put the work in to beat Leicester 1-0 thanks to a Jadon Sancho goal, earning a second consecutive clean sheet on the road.
Ten Hag was particularly impressed with how the players on the pitch worked for one another throughout the 90 minutes.
"Again [we had] good team spirit, we had 11 players on the pitch who fight for each other," he said post-match.
"I'm happy with the clean sheet. When our 11 are on the pitch, we defend together and attack together."
But the Dutchman did not shy away from the need for improvements as we continue to grow into the season.