While the lead remains unchanged at the top of Sunoco Daytona Challenge, the British Formula Three International Series weekend at Spa-Francorchamps was all about William Buller.

The Fortec Motorsport driver scored British series on both the first and third races of the weekend, taking 100 points from each victory into the Rolex 24 at Daytona Challenge.

The latest round of the British championship also formed part of the inaugural FIA Formula Three International Trophy, bringing a number of drivers running in the invitational class. The overall victories fell to the European based drivers – Prema Powerteam driver Roberto Mehri converting a double pole into a pair of overall wins.

However, Buller and Fortec teammate Lucas Foresti chased the Spaniard for pole, each man taking 20 Challenge points.

Foresti, however, starting from the lead of the British series runners in the first race didn't fare well at the start, tangling with invitation runner Marco Wittmann. Foresti battled on with an ill-handling car as a result of the clash finishing eighth among the British Championship runners at the start of a weekend that would result in him dropping out of the top ten in the Sunoco Daytona Challenge points.

Buller, meanwhile continued unimpeded, finishing second overall behind Mehri, beating Carlin man Jazeman Jaafar for class honours, his teammate Jack Harvey completed the class podium.

The second race again saw Buller leading the Challenge contenders, coming home third overall behind Mehri and Wittmann.

Challenge points leader Felipe Nasr took a second in class to add to his sixth from the first race to retain his comfortable lead, though a slip by his own superlative standards means a slightly decreased lead over Avon Tyres British GT driver Matt Griffin.

Buller's double win has rocketed him up the standing from 25th to 15th, where he lies on equal points with F3 rival Carlos Huertas and now one place behind Foresti.

The Formula Three drivers now join the British GT Championship on a summer break before resuming at Rockingham in early September. The next race to count towards the Sunoco Dayton Challenge is the British Endurance Championship's four hour encounter at Snetterton on August 13-14.  

Sunoco Daytona Challenge standings as of August 1 

  Driver Team Series Score
1 Felipe Nasr Carlin British Formula 3 90.36
2 Matt Griffin MTECH British GT 58.33
3 Marcus Clutton ABG Motorsport British GT 56.33
4 Javier Morcillo Azteca Motorsport British Endurance 55.92
5 Matthew Bell United Autosports British GT 49.17
6 Michael Guasch United Autosports British GT 49.17
7 Jay Shepherd Hawthorns Motorsport British Endurance 47,42
8 Craig Wilkins GT3 Racing British Endurance 46.46
9 Aaron Scott GT3 Racing British Endurance 46.46
10 Peter Belshaw ABG Motorsport British GT 46.33

The Checkered Flag race reports:

British Formula Three race one: Mehri and Buller take wins
British Formula Three race three: Mehri and Buller again