Which football team won a La Liga trophy in the season that started on 29 August 1998 and finished on 20 June 1999?
1998–99 La Liga The 1998–99 La Liga season, the 68th since its establishment, started on 29 August 1998 and finished on 20 June 1999.
1999–2000 UEFA Champions League knockout stage The knockout stage of the 1999–2000 UEFA Champions League began on 4 April 2000 and ended with the final at the Stade de France in Saint-Denis on 24 May 2000. The top two teams from each of the four groups in the second group stage competed in the knockout stage. For the quarter-finals, each group winner was randomly drawn against the runner-up from another group. The four quarter-final winners were then drawn together for the semi-finals, the winners of which contested the final.