Kiyonari is closing in on Rutter

The Japanese rider pushed his HM Plant Honda team-mate into second place in race one at the Scottish circuit and repeated the feat in race two.

Honda's Michael Laverty took third in the first race, while French Airwaves Ducati rider Gregorio Lavilla finished behind Rutter in the second.

Rutter (275 points) now leads Kiyonari by 43 points, with Lavilla on 216.

Kiyonari charged clear from his pole position in each of the 30-lap races, winning the first by 12 seconds, and the second by seven seconds.

He maintained afterwards: "It was very hard for me.

"Michael is riding fast and well, so it was necessary for me to get away and ride hard and well to keep clear of him."

Kiyonari has now won eight races this season, and Rutter admitted: "I have to do something about him.

"I can't let him keep getting away like this and need to start winning some races."

Race one:
1 Ryuichi Kiyonari (Jap) Honda 25mins 4.260secs
2 Michael Rutter (GB) Honda at 12.538secs
3 Michael Laverty (GB) Honda at 24.692
4 Glen Richards (GB) Kawasaki at 26.361
5 Leon Haslam (GB) Ducati at 26.732
6 Gregorio Lavilla (Fra) Ducati at 27.393
7 John Reynolds (GB) Suzuki at 30.496
8 Karl Harris (GB) Honda at 38.125
9 Gary Mason (GB) Honda at 40.659
10 Dean Thomas (GB) Kawasaki at 41.473

Race two:
1 Kiyonari 06.287secs 2 Rutter at 7.122secs 3 Lavilla at 15.522 4 Laverty at 16.690 5 Haslam at 17.473 6 Reynolds at 19.148 7 Richards at 21.524, 8 James Haydon (GB) Suzuki at 25.697 9 Jonathan Rea (GB) Honda at 26.633 10 Thomas at 27.074

Riders standings:
1 Rutter 275pts
2 Kiyonari 232
3 Lavilla 216
4 Richards 160
5 Haslam 152
6 Harris 115
7 Thomas 97
8 Laverty 93
9 Mason 82
10 Sean Emmett (GB) Yamaha 79