Valtteri Bottas became "bitter" over his five-year failure to challenge Lewis Hamilton for Formula 1 glory, in the view of Karun Chandhok.
The Finn made the move to Mercedes in 2017 having impressed while driving for Williams. He joined a couple of months after Hamilton had been beaten to the drivers' title glory by Nico Rosberg, who then announced his immediate retirement from F1.
Bottas spent the next five seasons in the quickest car on the grid, giving him plenty of chances to rack up race wins and compete for titles. But he was constantly outshone by Hamilton during that spell and, eventually, he left for a fresh start while the team brought in George Russell.
