Martin Brundle believes Jenson Button is the big winner in Lewis Hamilton's McLaren departure as the team is now his.
Hamilton left McLaren at the end of last season after signing a three-year deal to race for Mercedes.
McLaren drafted in Sergio Perez as his replacement and although team boss Martin Whitmarsh insists both drivers will have "equal treatment", Button is now the unofficial lead driver.
"Lewis heading off means it's Jenson's team, he can concentrate on leading that team, and I think Jenson will grow into that position," Brundle told reporters at the Autosport International Motorshow.
"The fastest driver in the world has left the team and [Jenson] doesn't have to worry about his data any more - even if it went on Twitter occasionally!"