Troy Bayliss doubles in Brno after taking Superpole earlier in Brno.

Bayliss had not had a win since April and had never triumphed at the Czech circuit, but the Ducati rider broke his duck with his 47th career victory in race one and then cemented his place at the top of the World Superbike standings by doing the same in race two. Bayliss beat fellow Australian Troy Corser by 1.5 seconds in the first race of the day and enjoyed victory by even less of a margin in the second as Michel Fabrizio rode across the line less than a second behind him. The 39-year-old extends his lead at the top of the table to 309 points, 79 ahead of second-placed Max Neukirchner who, after his heroics at Misano, could only manage seventh and fifth places. Bayliss started in pole position but it was Max Biaggi and Corser who tussled for the lead for more than half the race, before eventually being overtaken by the experienced Australian in a spectacular move that almost ended in disaster. Corser was attempting to wrest the lead off of Biaggi, who was looking for his ninth successive victory at Brno, but was very nearly taken out by Bayliss who was trying to overtake on the other side of the Sterilgarda rider.

But the three avoided a crash with Bayliss eventually taking the lead and clinging on for a long-awaited victory in his last race at the circuit.

It was more of the same in the second race of the day as Corser got off to a great start before Bayliss snatched the lead off his fellow Australian on lap nine.

It looked a close call whether Corser would manage to retake the lead but the Yamaha rider appeared to be suffering from grip problems and slipped away from Bayliss before being overtaken by Biaggi with two laps of the 20 to go.

Biaggi thought he had secured second spot until a fantastic late surge from Fabrizio, who had finished third in race one, saw him fly from sixth on lap 14 to very nearly claim a stunning victory.

Carlos Checa who started the weekend in third had a day to forget as he finished the first race in eighth place before his bike ground to a halt on lap 10 of the second, with the Spaniard looking to break into the top six.

Northern Irishman Johnny Rea claimed his first World Supersport victory in a photo finish with championship leader Andrew Pitt.

The Ten Kate Honda man prevailed by just two hundredths of a second with Josh Brookes and Broc Parkes maintaining a strong Australian presence in the top four.

Englishman Craig Jones suffered heartbreak, however, as mechanical trouble robbed him of his first race win of the season.

The Parkalgar Honda rider started fifth on the grid and quickly took over leadership of the race, only to be forced out of contention late on.

RACE ONE

1-Troy Bayliss (Ducati)

2-Troy Corser (Yamaha) +1.468

3-Michel Fabrizio (Ducati) +3.272

4-Max Biaggi (Ducati) +3.475

5-Ryuichi Kiyonari (Honda) +3.791

6-Noriyuki Haga (Yamaha) +9.120

7-Max Neukirchner (Suzuki) +9.358

8-Carlos Checa (Honda) +11.787

9-Yukio Kagayama (Suzuki) +17.228

10-Kenan Sofuoglu (Honda) +17.705

RACE TWO

1-Troy Bayliss (Ducati)

2-Michel Fabrizio (Ducati) +0.928

3-Max Biaggi (Ducati) +1.259

4-Troy Corser (Yamaha) +1.785

5-Max Neukirchner (Suzuki) +3.942

6-Ryuichi Kiyonari (Honda) +7.910

7-Noriyuki Haga (Yamaha) +11.297

8-Fonsi Nieto (Suzuki) +11.375

9-Yukio Kagayama (Suzuki) +13.103

10-Kenan Sofuoglu (Honda) +18.978

Points standings: 1-Bayliss 309, 2-Neukirchner 230, 3-Corser 218, 4-Checa 215, 5-Haga 210, 6-Nieto 161, 7-Ruben Xaus 148, 8-Fabrizio 147