Former f1 driver alexander Rossi admits he 's puzzled at the loss of speed he felt during Saturday 's qualifying session at St. petersburg .
Former f1 driver alexander Rossi believes his race pace will be more representative of his potential .
Former f1 driver alexander Rossi admits he 's puzzled at the loss of speed he felt during Saturday 's qualifying session at St. petersburg , but believes his race pace will be more representative of his potential .