DTM rookie Nico Muller ends the practice running at the Moscow Raceway fastest of all as the young Swiss led an Audi 1-2-3 ahead of qualifying later this afternoon.
Having set the third best time during FP1, Muller moved it up a gear during the final practice around the 3.9 kilometre circuit to become the first, and so far only, man to dip under the 29 second barrier with a 1 minute 28.993 second lap.
His lap toppled defending DTM champion Mike Rockenfeller's previous best by a smidgen under a tenth of a second as the Phoenix-driver settled for second despite leading most of the session.
Rockenfeller, who had already set a 29-flat lap, was on course to improve further, but a minor error on his second flying lap denied the German to claim the bragging rights ahead of qualifying.
The threat from Mattias Ekstrom also looms large as the Swede, who was second in FP2, kept himself in the top-three with leading RS5 Audi's separated by one-tenth of a second.
Next up was the BMW's of Maxime Martin, continuing his strong early pace in fourth, and Timo Glock, who catapulted his MTEK-run M4 up the order in fifth.
Miguel Molina was the next Audi in sixth while FP1's pacesetter Marco Wittmann fell down the order to seventh after the championship leader, unlike the majority of others who improved, actually dropped two-tenths from his previous FP1 best.
BMW's Bruno Spengler was eighth while Mercedes' prospects improved slightly with Gary Paffett and Daniel Juncadella moving up the rankings to a high of ninth and tenth in their C-Coupe machines.
Former-F1 star Paul di Resta couldn't replicate his Mercedes team mates promising performance and remains glued towards the rear of the field in 17th.