With clouds covering the circuit the final hour long practice session for the 2010 Korean Grand Prix would get underway with both Williams drivers looking to improve on their Friday times. After Friday practice Rubens Barrichello and Nico Hulkenberg were in thirteenth and sixteenth. Trulli would be first out followed by several other drivers. Hamilton and Massa would come out early. Both Renaults were out on the track joined by Alonso and Button. Nico would be the first Williams out on the track. The drivers would return to their pits after their installation laps Rubens was now out on the track. Nico would pit while the only driver yet to come out was Vettel.

With seven minutes of the session completed the track was now empty. With ten minutes of the session completed Vettel would finally take to the track for one lap returning to his pit. Patrick Head was taking to Rubens in the Williams pit with forty five minutes of the session remaining. Alguersuari was the first driver back out followed by Kubica. Buemi and Di Grassi also came out followed by Nico in the first of the Williams. Alguersuari would set the first time with a 1m:45.671. Both Force India cars were out on the track as Buemi set a 1m:46.410. Alguersuari had improved with a 1m:45.248 while Nico would move into third with a 1m:52.100, taking things very easily. Buemi was now fastest with a 1m:43.802.

Liuzzi was now second with a 1m:44.709, as team-mate Sutil had a quick spin at Turn eleven. He would bring a huge amount of dust back onto the track. Sutil was now third with Liuzzi fourth. Nico was now fourth with a 1m:45.341 as Buemi improved with a 1m:42.993. Nico was now fifth while Rubens was still in his pit. Heidfeld would improve to be fifth, 1m:45.017. Sutil would go fastest with a 1m:42.980. On his next lap Nico would put in a very quick lap with a 1m:41.449 to go fastest. But Buemi would move ahead with a 1m:41.349. Liuzzi and Sutil were third and fourth. Nico was now second with a Liuzzi third, Sutil fourth, Alguersuari fifth and Heidfeld in sixth. Nico would pit joining Alguersuari. Alonso would be the first of the title contenders to return to the track. Hamilton and Massa were also now out on the track.

Rubens would finally take to the track with just under thirty minutes remaining. Those who had done the early running were back in their pits while Button was now also on the track. Kobayashi was now fifth with a time of 1m:42.724. Both Renault's were out on the track joined by Webber. At this time the harder tyre was the choice of the drivers. Alonso would go fastest with a 1m:40.795 while Rubens would move up to eighth, 1m:42.929. Nico was now in third while Vettel also came out of the pits. Massa was now fourth, 1m:41.464, while Hamilton's first lap would see him ninth. Button was in twelfth. Rubens would improve to jump up to fifth with as 1m:41.524. Webber was sixth while Nico would return to the track as Button went fastest with a 1m:40.794.

But Alonso was able to move ahead with a 1m:39.942 to be fastest while Kobayashi moved up to third. Hamilton would go fastest with a 1m:39.705, from Alonso, Massa, Webber, Button, Kubica, Kobayashi, Buemi, Nico, and Rubens now in tenth. The times continued to improve with Alonso now fastest with a 1m:39.217. Vettel was in eleventh with a time of 1m:41.896. Webber would move up to second, 1m,:39.589, as we saw Kubica jump up to fourth, 1m:39.860. Vettel would improve with a 1m:40.092 to be fifth as Button went fastest with a 1m:39.939. Nico had put in an i8mproved lap to be ninth with a 1m:41.092. But Rubens would moved ahead of his team-mate with a 1m:40.448. Hamilton was again
fastest with a 1m:38.540.

With eighteen minutes remaining Button would pit joined by Alonso. Webber and Vettel were fourth and fifth. Vettel would improve his time slightly with a lap of 1m:39.780 but he would remain in fifth. Kubica was able to set a 1m:38.766 to now be in second followed by an improving Webber, 1m:38.777. Schumacher and Rosberg were now in ninth and tenth but Nico would improve with a 1m:40.418 to take tenth. Rubens had pitted and was currently in twelfth, 1m:40.448. Buemi and Alguersuari would move into sixth and eighth. Schumacher was now sixth, 1m:39.340, while Nico had retuned to his pit. Nico and Rubens were now in twelfth and fourteenth. Rosberg was now in second with a time of 1m:38.566. Alguersuari was now sixth with a 1m:39.159. The track was now quite empty as the drivers prepared for their practice qualifying runs.

Nico and Rubens were now in thirteenth and fourteenth. Not an encouraging performance as they got ready for their soft tyre runs. Rubens would be the first of the Williams drivers to return to the track while Heidfeld moved up to thirteenth, 1m:40.289. Hamilton would come back out on the softer tyre joined by Button. Seven minutes remaining and more drivers would return to the track as we now had Nico and Rubens in fourteenth and fifteenth. Kobayashi would improve to be in thirteenth with a 1m:40.246. We now only had a few drivers in their pits but for Nico his session would see him have problems seeing his engine cover off. Nico was now the only driver in the pits as everyone was out on the option tyre.

Rubens would improve his time but was still down in thirteenth with a lap of 1m:39.944. Nico was still in his garage as Kobayashi moved up to sixth, 1m:39.145. Rubens was able to find some extra time to move up to eighth, 1m:39.192. Kubica would go fastest with a 1m:37.932. Button was now second, 1m:38.419, as Alonso would have a quick lap ruined by another driver. Hamilton was now third from Rosberg, Webber, Massa, and Kobayashi. Alguersuari was now eighth and Rubens ninth while Kubica would improve with a 1m:37.354 to extend his lead margin. Hamilton was now second, 1m:37.402, from Alonso, Webber, Rosberg, Massa, Button, Schumacher, Sutil, Petrov, while Rubens would improve his time with a 1m:38.733 to be eleventh. Nico was able to get out on the track in the closing moments and was able to move up to eighth with a 1m:38.501. Vettel was down in sixteenth over 2.4 seconds off the pace.

The cars wou7ld return to the start grid to carry out some practice starts. So it would be Kubica fastest from Hamilton, Alonso, Webber, Rosberg, Massa, Button, Nico, Schumacher, Sutil, Petrov, and Rubens in twelfth. A great effort from Nico given the fact that he lost time in his pit while the team sorted out the issue with his car. Nico was backed up by Rubens in an encouraging twelfth.

Pos  Driver         Team		    Time      Laps
 1.  Kubica         Renault                 1m37.354  15
 2.  Hamilton       McLaren-Mercedes        1m37.402  16
 3.  Alonso         Ferrari                 1m37.426  15
 4.  Webber         Red Bull-Renault        1m37.441  13
 5.  Rosberg        Mercedes                1m37.629  12
 6.  Massa          Ferrari                 1m37.955  16
 7.  Button         McLaren-Mercedes        1m38.419  15
 8.  Hulkenberg     AT&T Williams-Cosworth  1m38.501  17
 9.  Schumacher     Mercedes                1m38.630  12
10.  Sutil          Force India-Mercedes    1m38.632  18
11.  Petrov         Renault                 1m38.668  14
12.  Barrichello    AT&T Williams-Cosworth  1m38.733  16
13.  Buemi          Toro Rosso-Ferrari      1m39.058  21
14.  Kobayashi      Sauber-Ferrari          1m39.145  16
15.  Alguersuari    Toro Rosso-Ferrari      1m39.159  21
16.  Vettel         Red Bull-Renault        1m39.780  9
17.  Heidfeld       Sauber-Ferrari          1m40.289  17
18.  Liuzzi         Force India-Mercedes    1m41.591  15
19.  Trulli         Lotus-Cosworth          1m41.623  15
20.  Glock          Virgin-Cosworth         1m41.853  17
21.  Kovalainen     Lotus-Cosworth          1m42.095  19
22.  di Grassi      Virgin-Cosworth         1m43.111  19
23.  Senna          HRT-Cosworth            1m43.417  19
24.  Yamamoto       HRT-Cosworth            1m43.880  20