The second round of the 2002–03 UEFA Cup was contested between 29 October and 14 November 2002. A total of 48 teams participated in this round, with the 24 winners joining the eight Champions League group stage third-placed teams in the third round.
In the second round, each tie was played over two legs, with each team playing one leg at home. The team that scored more goals on aggregate over the two legs advanced to the next round. If the aggregate score was level, the away goals rule was applied, i.e., the team that scored more goals away from home over the two legs advanced. If away goals were also equal, then thirty minutes of extra time were played, divided into two fifteen-minute halves. The away goals rule was again applied after extra time, i.e., if there were goals scored during extra time and the aggregate score was still level, the visiting team advanced by virtue of more away goals scored. If no goals were scored during extra time, the tie was decided by penalty shoot-out.[1]
The draw was held on 8 October 2002 in Nyon, Switzerland.[3] Before the draw, the 48 teams were divided into 24 seeded and 24 unseeded teams, based on their 2002 UEFA club coefficients.[4] For convenience of the draw and to avoid pairing of teams from the same association, the teams were distributed into four groups of twelve teams, each containing an equal number of seeded and unseeded teams.[2] In the draw, a seeded team from each group was paired with an unseeded team from the same group. The first team to be drawn played the first leg at home.[1]
^Due to security issues caused by the Second Intifada, Israeli teams were required to play their home matches at neutral venues until further notice.[6]
Note: Between the 1999–2000 and 2008–09 seasons, the competition was still known as the UEFA Cup. All seasons are included following the competition's absorption of the Cup Winners' Cup.