The final practice session for the 2010 Singapore Grand Prix would be run on a dry Saturday evening. For the the AT&T Williams team they would see another strong performance from Nico Hulkenberg who would finish the session in seventh while team-mate Rubens Barrichello would drop down the order to finish in twelfth.

Pos  Driver              Team		        Time       Laps
 1.  Sebastian Vettel    Red Bull-Renault       1m48.028s  15
 2.  Fernando Alonso     Ferrari                1m48.650s  16
 3.  Lewis Hamilton      McLaren-Mercedes       1m49.000s  12
 4.  Felipe Massa        Ferrari                1m49.023s  18
 5.  Nico Rosberg        Mercedes               1m49.056s  17
 6.  Mark Webber         Red Bull-Renault       1m49.212s  13
 7.  Nico Hulkenberg     AT&T Williams-Cosworth 1m49.304s  17
 8.  Robert Kubica       Renault                1m49.520s  16
 9.  Adrian Sutil        Force India-Mercedes   1m49.916s  15
10.  Sebastien Buemi     Toro Rosso-Ferrari     1m49.949s  16
11.  Vitaly Petrov       Renault                1m50.040s  15
12.  Rubens Barrichello  Williams-Cosworth      1m50.053s  16
13.  Jenson Button       McLaren-Mercedes       1m50.060s  12
14.  Jaime Alguersuari   Toro Rosso-Ferrari     1m50.067s  16
15.  Michael Schumacher  Mercedes               1m50.067s  14
16.  Tonio Liuzzi        Force India-Mercedes   1m50.868s  16
17.  Nick Heidfeld       Sauber-Ferrari         1m51.016s  15
18.  Kamui Kobayashi     Sauber-Ferrari         1m51.027s  17
19.  Timo Glock          Virgin-Cosworth        1m52.340s  14
20.  Heikki Kovalainen   Lotus-Cosworth         1m53.146s  15
21.  Lucas di Grassi     Virgin-Cosworth        1m53.297s  15
22.  Jarno Trulli        Lotus-Cosworth         1m53.681s  17
23.  Christian Klien     Hispania-Cosworth      1m54.826s  16
24.  Bruno Senna         Hispania-Cosworth      1m55.367s  16