Cal Crutchlow continued to stamp his authority on World Supersport proceedings as second free practice got underway at Brno, the championship leader commanding a nine tenth advantage over his nearest rivals.

Having blown the field away with his immediate pace during first free practice, Crutchlow resumed his place out front five minutes into the session before going on to set his fastest lap time in the dying seconds.

A tenth quicker than his lap record from a day earlier, Crutchlow was run closest by Joan Lascorz, the Spaniard making big gains to almost drop into the 2mins 02secs bracket and reduce the margin to the front to less than a second.

More importantly, Crutchlow's nearest title contender Eugene Laverty remained well placed in third, but he continues to be 1.2secs a lap slower than his key rival.

Fabien Foret maintained his good start to the weekend in fourth, ahead of Kenan Sofuoglu and Anthony West, while Garry McCoy and Katsuaki Fujiwara were once again top ten contenders in seventh and eighth.

Massimo Roccoli, who spearheads the Intermoto Czech team's challenge at their home round, moved into ninth, ahead of countrymen Gianluca Nannelli and Michele Pirro.