Christian Horner believes Sebastian Vettel's Singapore domination was a one-off that was due to "unique circumstances."
The triple World Champion destroyed his competition last time out at the Marina Bay circuit, up by 10 seconds over Nico Rosberg before the Safety Car came out on lap 25.
And when the race resumed a few laps later, it wasn't long before he was again seconds up the road from the Mercedes driver.
Vettel eventually won the grand prix by 33 seconds over main title rival Fernando Alonso.
But while some in the paddock are concerned this is just a sign of what Red Bull can do, Horner reckons it was a one-off.
"There were times last weekend when Sebastian was two seconds quicker than the rest of the field, but I think it was due to unique circumstances," the Red Bull team boss told Autosport.
"It was a circuit he was completely on top of and the set-up of the car was working well. It was man and machine working at the top of their game."
But having said that, the Brit expects his team will still be strong at the remaining six grands prix as they chase the fourth Championship double.
"The next challenges we have in Korea and Japan are quite a bit different in characteristics," he said.
"I'm hopeful that we can be strong at those venues, but we can't take anything for granted as Mercedes have been strong at different points of the year and Alonso keeps turning up. He's always there.
"He's had three second places to Sebastian's three wins; so arguably, we should have had a bigger lead over him than we currently have. But he keeps finishing second and he's keeping us honest."
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