NW200: Seeley on top in first practice
The TAS Suzuki rider topped the Superbike timings on 119.10 mph with 12-times North West winner Michael Rutter second and Martin Jessopp third.
Honda man Cameron Donald was fastest in the Supersport class ahead of Seeley and the Yamaha of Michael Dunlop.
Advertisement
Hide AdAdvertisement
Hide AdSeeley then topped the Superstock leaderboard with Dunlop just behind.
North West 200 first practice timings
Superbike: 1 Alastair Seeley (Suzuki) 119.10, 2 Michael Rutter (Ducati) 118.68, 3 Martin Jessopp (Ducati) 116.95, 4 Gary Johnson (Honda) 116.44, 5 Stephen Thompson (Suzuki) 115.29, 6 Guy Martin (Suzuki) 115.21
Supersport: 1 Cameron Donald (Honda) 114.29, 2 Alastair Seeley (Suzuki) 114.25, 3 Michael Dunlop (Yamaha) 112.64, 4 Gary Johnson (Honda) 112.09, 5 Bruce Anstey (Honda) 111.22, 6 Guy Martin (Suzuki) 110.28
Superstock: 1 Alastair Seeley (Suzuki) 118.42, 2 Michael Dunlop (Kawasaki) 118.40, 3 Michael Rutter (Ducati) 116.74, 4 William Dunlop (Honda) 116.33, 5 Ian Lougher (Kawasaki) 116.29, 6 Adrian Archibald (BMW) 116.14