Shane Byrne gave his ailing World Superbike campaign a small boost with a pair of ascending rides at Miller Motorsports Park.

The former British Superbike champion had hoped to join Althea Ducati team-mate towards the front of the field at Miller Motorsports Park, but after a good performance during free practice, he could only qualify 11th on the grid.

Furthermore, his cause in race one was hampered by Jakub Smrz's expiring Ducati, Byrne forced off the circuit as he hit the oil being emitted from the bike ahead.

Despite this, Byrne fought back valiantly and just as rivals ahead back to struggle with tyre problems towards the end he managed to make up five positions in just four laps to cross the line sixth.

Adding a seventh place finish in race two, Byrne's performance sees him equal his previous best for the season at Portimao, form he hopes he can build on over the remainder of the season.

"The bike felt very good and I was happy with the set-up", said Shane. "I found that the level of grip varied between race 1 and race 2, it was better in the first. But I've taken some good points and this makes me more determined as we enter the second half of the championship.