Known only to us as “The Sparrow“, we just got some tips from our insider in the AMA. The Sparrow goes on to tell us that rumors of Miguel Duhamel making a return to AMA racing at Fontana are untrue, and the actual rider listed as “TBA” is instead Tyler Odom. The Sparrow also goes on to say that John Hopkins has been incredibly unhappy with the performance of his GSX-R1000, faulting the motor as having less power than the rest of the field. While indications seem to suggest that’s not the case, Yoshimura has put together a new lump for Hopper that looks to have plenty of juice, but will it pass scrutineering after the races? Continue reading for the full report from The Sparrow.