Mark Webber has warned Romain Grosjean he best have his running shoes on if he hits the Aussie in Singapore this Sunday.
Grosjean is back in Formula One have served a one-race ban for causing the first corner carnage at the Belgian Grand Prix.
The Lotus driver was in solid form on his return, putting his E20 up into the top ten in qualifying.
Grosjean will start Sunday's Singapore GP from eighth on the grid while Webber is seventh.
And the Red Bull racer has, with a smile, warned the Frenchman of the consequences should he ruin his grand prix.
"Yeah, he's okay," Webber said.
"He knows I've a good right hook on me so he will stay away from me.
"But he better put his sneakers on if he hits me."
