Lotus Renault GP has revised its driver line-up for this week’s test session in Jerez de la Frontera, Spain.

Vitaly will drive the R31 on Thursday and Friday, as originally scheduled. For Saturday and Sunday, the team will give mileage to Bruno Senna and will also evaluate Nick Heidfeld, who is a potential replacement for Robert Kubica as a race driver. The exact running order for the weekend will be confirmed on Friday evening.