Haryanto keeps Caterham on top
Rio Haryanto ensured Caterham remained on top of the GP2 testing timesheets on the middle day of running in Bahrain.
The Indonesian driver, who finished 19th in last year's series driving for Barwa Addax, lowered the Day One benchmark set by team-mate Alexander Rossi by 1.5 seconds to 1:39.129 as teams completed qualifying-style simulations in the morning session at Sakhir.
Rossi finished just over four hundredths of a second adrift with a near four tenths of a second gap then back to Carlin's Julian Leal. Raffaele Marciello (Racing Engineering) and Jolyon Palmer (DAMS) completed the top five.
The leading sub-1:40 pace seen in the morning wasn't reproduced in the afternoon session, however, as teams switched to longer race-style runs. Indeed, the difference was underlined by the fact that Haryanto slipped to the bottom of the 26-driver order with a best time six seconds slower than his day-best effort.
The three-day test, the final one of GP2's pre-season schedule, concludes on Friday.