SEE FULL FP1 RESULTS HERE
Ryuichi Kiyonari has edged out Shane Byrne by the slimmest of margins at the top of the timesheets in free practice one of the second round of the MCE British Superbike.
The Buildbase BMW rider took to the front inside the opening ten minutes and was never displaced from P1 in the opening practice session. Defending BSB champion Byrne kept his Japanese rival close company and the gap between the two briefly came down to just 0.002s five minutes from the end of the session.
However, the three-time BSB champion put in a new fastest lap in the closing stages to go 0.027s clear and pull out a small advantage on the chasing pack.
Championship leader Byrne grabbed second place in the session, with race one winner James Ellison in third, two-tenths behind the front pair.
Danny Buchan, who is making up for a frustrating opening round at Donington Park, put his Be Wiser Kawasaki fourth while Jakub Smrz impressively made up the top five on his British Moto Rapido Ducati Panigale R.
Kiyonari set the early pace with a 46.544s lap before a red flag temporarily brought the session to a halt after his Buildbase BMW team-mate Lee Jackson and Honda Racing's Dan Linfoot had separate falls at Clearways.
The session was paused so race stewards could recover the stricken riders and Linfoot had to be taken to the medical centre after suffering a wrist injury.
Josh Brookes lifted his Milwaukee Yamaha into sixth place at the chequered flag, followed by Jason O'Halloran, Howie Mainwaring and Billy McConnell with Tommy Bridewell rounding out the top ten.
The action continues with the second 45-minute free practice session scheduled for 3.25pm.