Ten Kate Racing have dominated the opening day of Practice at Donington Park with both of their riders taking top spot in the two sessions throughout the day.

Much like the second Superbike session of the day the second Supersport session was plagued with the classic British summer time weather. However, the Ten Kate Racing squad rose to the top on Friday and locked out the top spot of both sessions throughout the day.

Jorge Navarro finished the afternoon Practice session in the top spot as he mastered the wet conditions at Donington Park. The Spanish rider finished 15th in the dry opening session, but did much better in the wetter session in the afternoon.

Anupab Sarmoon took a shock second place by the end of the second Practice session of the day. The Thai rider had sat on top of the time screens in the early stages of the session but was displaced by Navarro later on.

Raffaele de Rosa looks strong around Donington Park in both the dry and wet conditions. The Italian rider finished third this afternoon and looks up to the task this weekend whatever the weather.

Federico Caricasulo finished fourth this morning and then finished fourth again this afternoon. Once again this Italian rider looks like he could be in the mix whether the races are dry or wet.

Valentin Debise finished tenth in the dry conditions this morning and finished fifth this afternoon for the GMT 94 Yamaha squad. The French rider could be in the mix if rain falls again this weekend.

The other Ten Kate Racing Yamaha rider, Stefano Manzi, took top spot this morning. However, he did not have the pace to match his team-mate in the wet conditions this afternoon. The Italian clearly prefers to ride Donington Park in the dry, but he was still ahead of his Championship rival in both conditions.

Niki Tuuli took the Triumph to another top ten spot this afternoon. The Finnish rider was seventh place at the end of the wet afternoon session.

The Championship leader, Nicolo Bulega, might have his work cut out for him this weekend. This morning the Ducati rider was third place and then this afternoon he slipped down to eighth. This could be a round where Manzi is able to put the pressure onto Bulega.

Another British rider cracked the top ten in the afternoon session, but this time it was not Tom Booth-Amos. This time it was the turn of John McPhee to be the top British rider at Donington Park in Supersport. The Scottish rider finished ninth overall on board his Kawasaki.

Finally, it was Glenn van Straalen who rounded out the top ten as he placed his EAB Racing Yamaha machine just inside the top ten at the end of FP2.

With the changing conditions throughout the day it is still Stefano Manzi on top overall from his lap time in FP1. Then it is Yari Montella and Nicolo Bulega who are sat second and third overall at the end of the opening day at Donington Park for World Supersport.