Troy Bayliss has extended his lead in the World Superbike Championship after a prevailing in a hard fought exchange with Troy Corser and Max Biaggi at Brno.

Although his first victory since Assen in April, a maiden career triumph around the Czech circuit nonetheless signals the sixth time Bayliss has topped the podium this season.

Battling it out with Corser and Biaggi, all of which enjoyed stints in the lead, Bayliss made his decisive move on lap 12 before easing home a comfortable 1.4secs winner over Corser.

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From the start, Biaggi made the best getaway from fourth on the grid, the Italian edging in front as the 30-strong field swept into the long first corner, ahead of Corser, Bayliss, Michel Fabrizio and Fonsi Nieto.

What followed was an enjoyable tussle between Biaggi and Corser, with the duo swapping the lead on lap two before Corser made a move stick on the fourth revolution. Two laps later and Biaggi was back ahead, albeit still under pressure from Corser and eventually Bayliss.

The Ducati rider had been dicing with the charging Max Neukirchner in the early stages, with German up to third having started down in ninth. However, Bayliss was back ahead on lap ten and straight onto the back of the lead fight.

Indeed, with Biaggi unable to put some air between himself and Corser, it seemed quite inevitable that the experienced Aussie would battle his way back past, even if the execution was probably more spectacular than he intended. Climbing past as they rode over the top of the hill towards turn two, Corser swept across the front of the Sterilgarda bike, but was very nearly taken out by Bayliss, who had chosen the other side of Biaggi to make his move. Although almost three abreast into the corner, the trio avoided contact as they shook out with Corser leading Bayliss and Biaggi.

Their battle was far from over though as Bayliss passed Corser before the end of the lap and dragged Biaggi through with him.

As Biaggi and Corser went on to dispute second - with Corser moving back through on lap 13 - Bayliss simply pulled away from the competition. Settling into a rhythm and protecting his tyres, Bayliss eked out a solid lead to cross the line just over a second up on Corser.

Although victory continues to elude him, second for Corser still marks his seventh podium of the season, while the race also saw him complete the extraordinary milestone of 6,000 World Superbike laps.

For Biaggi, his race went on to take an eventful turn when he slipped into the clutches of sparring partner Fabrizio, the factory rider harrying his countryman over the final few laps before finally overtaking in the sweetest place - the final corner of the final lap.

Fabrizio was lucky to have the chance to challenging Biaggi though as he was tailed nearly all the way by Ryuichi Kiyonari, who gamely battled his way back up the order following a poor start. Pulling off a number of fine overtaking moves, including one on Fabrizio, Kiyonari eventually settled for one of his best results of the season in fifth.

Like Biaggi, Neukirchner seemed to struggle with his tyres in the latter stages as he dropped down to an eventual seventh place, behind Noriyuki Haga, the Japanese rider having to battle up to sixth from 12th on the grid.

Indeed, Suzuki had a tough race all round after Yukio Kagayama finished in a rather unspectacular ninth, while Fonsi Nieto threw away a good result with a fall in the latter stages.

By contrast, Honda showed improved form with Carlos Checa coming home eighth, while Kenan Sofuoglu earned the status of the 'biggest mover' by finishing in tenth from 26th on the grid.

That was enough to place him ahead of Karl Muggeridge, Shinichi Nakatomi and Niccol? Canepa, who looked very race rusty when he suffered a poor start and continued to fall further away as the race progressed.

A recovering Nieto and Gregorio Lavilal rounded out the points positions.

Elsewhere, home favourite Jakub Smrz got no further than the third lap when he was involved in a clash with Regis Laconi's Kawasaki, while Lorenzo Lanzi and Ruben Xaus were other riders to miss out on the chance of points following a respective fall and technical woe.