Mohamed Salah and Marco Streller scored second-half goals for the Swiss champions after Oscar gave the Blues a half-time lead at Stamford Bridge and the Basel boss was absolutely thrilled with the performance of his players.
"For us, it's a great honour to win here," he said.
"We can enjoy the moment. It's not every day you can come from behind and win at Chelsea.
"Of course it's a great achievement. (But) this is one game, we've got five games ahead of us.
"There's a lot ahead of us still."