McAMS Yamaha's Tarran Mackenzie saw his hopes of netting the 2019 Bennetts British Superbike title slip further away after an Assen weekend he described as one of the worst this year.

After discovering there was a big problem with his R1's chassis at the end of Friday, the little Scotsman was playing catchup and rescued seventh place in race one.

But a nightmare turn one in race two saw Mackenzie drop backwards from where he struggled to recover.

“Race one was really positive, I got a good start and got in a good rhythm. It was our first time riding with that particular setting so it took me a few laps to get into it but when I did I felt really strong towards the end of the race," said Mackenzie.

"In race two, a rider came across me at the start and I had to roll to avoid hitting him and I got mugged into turn one and that was basically my race over. I was making good headway but then ended up in battles with a few others and that lost the gap to the front.

I felt like I could have done a much better race so I’m going away disappointed, it was probably one of the worst weekends I’ve had this year.

"We didn’t have a good feeling all weekend but it came good today, the bike felt great but I didn’t perform. I’ll go away, do my homework and try and come back at Donington stronger.”

Mackenzie now trails series leader Scott Redding by 72 points with 125 left to claim over two rounds.