Click here for full results from session two of the final BSB pre-season test at Donington Park
Shane Byrne has laid his marker down by going fastest in the midday session at the final MCE British Superbikes pre-season test at Donington Park, leading from Michael Laverty and Luke Mossey.
In a slightly longer session to the morning, the majority of the BSB field notched up plenty of laps in pleasant conditions at the Leicestershire circuit, with Byrne taking top spot from Tyco BMW's Laverty by just 0.007s. Mossey grabbed consecutive third places but was separated from Laverty by just one-thousandth of a second.
Despite the relatively cool track conditions, Byrne's time of 1m 29.963s was half a second off the 2015 pole position time notched up by Ryuichi Kiyonari 12 months ago.
After claiming the fastest lap time at the Silverstone test on Tuesday the JG Speedfit Kawasaki crew opted to sit out the Donington Park test, as well as ePayMe Yamaha and Buildbase BMW, which meant a full representation of the BSB pecking order cannot be shown by the time screens.
O'Halloran suffered a premature end to his midday session after a fall at Goddards in the final 15 minutes, while his Honda Racing team-mate Jenny Tinmouth also had a small off but was able to continue.
With less than five minutes remaining a number of riders went for quick blasts of qualifying simulations but were denied full runs by a red flag which brought an early end to the session. BSB rookie Matej Smrz sustained a high-speed crash at the exit of Goddards on to the main straight and required medical attention.
As a result, Byrne held on to top spot ahead of this morning's quickest rider Laverty with Mossey taking back-to-back thirds. Kiyonari continued to make strong progress on the Bennetts Suzuki in fourth ahead of Tyco BMW's new signing Christian Iddon.
Despite a small off towards the end of the session Jakub Smrz held on to sixth spot in front of the stricken O'Halloran and his Honda Racing team-mate Dan Linfoot.
BSB rookie Glenn Irwin claimed ninth on the timesheet, 0.6s of his team-mate Byrne at the top, with Filip Backlund completing the top ten heading into the lunch interval.