Belgium coach Tedesco rues missed chances after surprise loss to Slovakia
Belgium were wasteful in front of goal and created enough opportunities to win comfortably but a mixture of poor finishing and some excellent Slovakia defending kept them at bay.
"The only thing that we didn't do well was taking chances," Tedesco said after the match.
"We had plenty. It's part of the game. Of course the players were disappointed.
"We had many chances, we pressed high," he added.
"Normally you don't lose this game. It hurts," he said.
Tedesco added that he knew his 15-game unbeaten run since he took over the team last February would come to an end at some point. "Unfortunately this was today," he said.
Belgium had two Romelu Lukaku goals ruled out by VAR - one for offside and, more controversially, for a handball by Lois Openda in the build-up but Tedesco did not criticise the officials.
"I want to be a fair loser - we trust the referees," he said.
The coach also backed the performance of his players, including Lukaku, who missed several clear-cut chances.
"He is strong, mentally strong," Tedesco said, adding that talismanic midfielder Kevin De Bruyne "played really well tonight - he is very important for the team."
Belgium face Romania in their second Group E game in Cologne on Saturday and must put behind them the defeat by Slovakia.
"It hurts a lot tonight," Tedesco added.