Aprilia's Max Biaggi edged out Regis Laconi by just 0.01sec to lead the final day of the first 2009 World Superbike test at Phillip Island.
With the Ducati, Suzuki, Honda, Yamaha and BMW factory teams not testing until Saturday and Sunday at the Australian circuit, Aprilia's dominance came under closest attack from new DFX Ducati rider Laconi, despite a Wednesday fall.
The Frenchman exactly matched Aprilia's Shinya Nakano to share the top spot on Tuesday, when Biaggi had been forced to settle for third position after an accident. That fate, and position, went to team-mate Nakano on day two, but the WSBK rookie still set a lap time just 0.14sec from Biaggi.
However, surprise of the day was undoubtedly Broc Parkes, the Australian slicing over two seconds from his lap time to claim fourth place for Kawasaki.
Stiggy Honda riders Leon Haslam and Roberto Rolfo were left either side of Althea Honda's Tommy Hill, with Makoto Tamada completing the top eight on the second PBM Kawasaki.
Anthony West remained in control of the World Supersport test, although nearest rival Matthieu Lagrive was only 0.1sec slower.
The opening round of the 2009 WSBK and WSS championship takes place at Phillip Island on March 1.Phillip Island World Superbike unofficial testing times - Wednesday
1. Max Biaggi
ITA Aprilia RSV-4 1min 32.59secs
2. Regis Laconi
FRA DFX Corse Ducati 1098RS 1min 32.60secs
3. Shinya Nakano
JPN Aprilia RSV-4 1min 32.72secs
4. Broc Parkes
AUS Kawasaki SRT ZX10-R 1min 32.90secs
5. Leon Haslam
GBR Stiggy Honda CBR1000RR 1min 33.10secs
6. Tommy Hill
GBR Althea Honda CBR1000RR 1min 33.30secs
7. Roberto Rolfo
ITA Stiggy Honda CBR1000RR 1mmin 33.50secs
8. Makoto Tamada
JPN Kawasaki SRT ZX10-R 1min 33.90secsPhillip Island World Supersport unofficial testing times - Wednesday
1. Anthony West
AUS Stiggy Honda CBR600RR 1min 35.90secs
2. Matthieu Lagrive
FRA Althea Honda CBR600RR 1min 36.00secs
3. Mark Aitchison
AUS Althea Honda CBR600RR 1min 36.00secs
4. Gianluca Vizziello
ITA Stiggy Honda CBR600RR 1min 36.7secs