2008–09 UEFA Cup knockout stage
international football competition

The knockout stage of the 2008–09 UEFA Cup began on 18 February 2009, and concluded with the final at the Şükrü Saracoğlu Stadium in Istanbul on 20 May 2009. The final phase involved the 24 teams that finished in the top three in each group in the group stage and the eight teams that finished in third place in the UEFA Champions League group stage.
Format
Each tie in the final phase, apart from the final, was played over two legs, with each team playing one leg at home. The team that had the higher aggregate score over the two legs progressed to the next round. In the event that aggregate scores finished level, the team that scored more goals away from home over the two legs progressed. If away goals are also equal, 30 minutes of extra time were played. If goals were scored during extra time and the aggregate score was still level, the visiting team qualified by virtue of more away goals scored. If no goals were scored during extra time, there would be a penalty shootout after extra time.
The draw mechanism for each round is as follows:
In the draw for the round of 32, matches were played between the winner of one group and the third-placed team of a different group, and between the runners-up of one group and the third-placed team from a Champions League group, with the group winner and runner-up host the second leg. Teams from the same national association or have played in the same group in the group stages cannot be drawn together.
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