Just three weeks after claiming Sebastian Vettel is beatable, Mark Webber is now struggling to identify his team-mate's "weaknesses".
The Australian was forced to settle for second place behind Vettel after another faultless pole to chequered flag display from the defending World Champion at the Turkish Grand Prix. Sunday's victory helped Vettel to stretch his lead in the Drivers' Championship to 34 points after just four races.
Webber admits it's difficult to stop his team-mate at the moment, but urged the rest of the pack to end his great start to the season.
"He is on top of his game," the 34-year-old said. "He's had a great start to the season and he is near to his maximum. It's not ideal for the rest of us, but it is up to us to bring that to the end sooner rather than later.
"Everyone has weaknesses, and it is up to you to interrogate those as much as you can. Seb has done a good start, and the team has done a great job so that is it."
Webber was left kicking himself after he got off to a poor start at Istanbul Park and slipped behind Nico Rosberg who, according to the Red Bull man, didn't make the cleanest of moves.
"I got the maximum I could actually," Webber said.
"It would have been difficult to beat Seb. It would have been easier if I was ahead of Rosberg. Nico is doing his race, fair enough, but he could have made a cleaner move initially. In the end the result is as it deserves to be, I think."