An equaliser in the final minute from Julio Santa Cruz saw Nacional Asuncion keep their Copa Libertadores title hopes alive on Wednesday.
Santa Cruz got on the end of Fredy Bareiro's flick-on to turn the ball into the net, as Nacional drew 1-1 with San Lorenzo in the first leg of the Copa Libertadores final in Paraguay.
San Lorenzo had led since the 65th minute thanks to a stunning volley from Mauro Matos but the Argentine visitors had to settle for a draw, after Santa Cruz's late heroics.
Bareiro flicked a long pass on with his head and Santa Cruz got to the ball ahead of his marker and San Lorenzo goalkeeper Sebastian Torrico, sliding in to score and spark pandemonium in the stands of the Estadio Defensores del Chaco in Asuncion.
San Lorenzo had the better of the first leg, with five of their 12 shots hitting the target, while the hosts shot six times but failed to test Torrico until Santa Cruz scored.
It was Nacional that created one of the best chances of the first half with a 27th-minute corner reaching Leonardo Caceres but the central defender could only stab his shot over the bar from six yards.
San Lorenzo's Emanuel Mas hit the post just after the half-hour mark but the visitors had to wait until 25 minutes remaining to claim the lead.
A neat move down the left eventually saw Julio Buffarini tee up Hector Villalba and Matos got to the winger's cross just ahead of his marker, hitting a volley around the corner that snuck inside the near post.
Having gone behind, Nacional began to look a bit more adventurous, although San Lorenzo appeared comfortable in defence until the third minute of second-half stoppage time.
Santa Cruz's strike ensures Nacional remain in the hunt for their maiden Copa Libertadores title, as both clubs look to lift South America's most prestigious continental club trophy for the first time.
San Lorenzo will host the second leg at the Estadio Pedro Bidegain on August 13.
|Coach: G. Morínigo|
for J. Benítez 63'
for Derlis Orué 71'
for R. Coronel 71'
|Sessegnon signs with Montpellier|
|Rakitic delighted with form|
|Gameiro: I could have joined Barcelona|
|Stones talks up Celtic quality|
|Liverpool good enough to win title - Houllier|
|Klopp happy with Firmino in central role|
|Watford got bullied all over the pitch - Deeney|
|Nuno keen for Porto to end England misery|
|Legia boss Magiera set for whirlwind debut|
|´Terrific´ Burnley delight Dyche|
|Burnley 2 Watford 0: Landmark goals for Hendrick and Keane seal first win in four|
|Schmidt lauds hitman Hernandez|
|Klopp not banking on Liverpool winning title|
|Kroos plays down Ronaldo rage rumours|
|Confidence coursing through Copenhagen|
|Madrid form draws no concern for Zidane|
|Burki looking forward to ´dream´ Madrid clash|
|Juve and Higuain have work to do - Allegri|
|CSKA boss Slutski wary of Tottenham threat|
|Pochettino: Kane to return within three weeks|
|City youngster Diaz signs three-year deal|
|Aurier vows to ´continue working hard´ for PSG despite prison sentence|
|Tuchel expecting Ronaldo on top form|
|Ter Stegen eyes new Barcelona deal|
|Hazard: No excuse for Arsenal defeat|
|Cisse back in training with Auxerre|
|Hummels resumes training ahead of Atletico clash|
|Facing Barcelona´s MSN not a nightmare, insists Bravo|
|Thiago: Atletico defence best in the world|
|Alonso wants to end career at Bayern Munich|
|Ranieri went to Slimani for Porto advice|
|Draxler: Wolfsburg blocked my exit|
|Samoura defends abolishment of racism task force|
|Sampaoli backs Nasri for France recall|
|Gisdol ´twitching with joy´ at Hamburg presentation|
|Zanetti determined Inter will return to the top|
|Getafe sack Esnaider|
|Bartra happy with playing time at Dortmund|
|Aurier handed two-month prison sentence over police altercation|
|Klopp attributes Lallana´s fine form to hard work|
|Totti´s wife slams ´small man´ Spalletti|
|Guardiola has already done an amazing job at Manchester City - Alonso|
|Referees attacked by hooligans in Bosnia and Herzegovina|
|Griezmann: I am not the anti-Benzema|
|Sterling hails Guardiola´s role in goalscoring form|
|Champions League Matchday Two: Madrid look for first win in Dortmund|
|Smalling confident Rooney will bounce back|
|Vardy fears ´permanent stain against my name´ following casino incident|
|Brave Wilshere will reap rewards of loan move - Howe|
|MLS Review: Sounders surprise Galaxy, Kamara double sinks New England|
|Walcott a special case - Wenger|
|Guardiola striving for more after perfect 10|
|Chelsea risk another mid-table finish, admits Conte|
|Montella feels AC Milan lacked courage|
|Robben speaks out on injury fears|
|Fiorentina 0 AC Milan 0: Ilicic misses penalty on Montella´s return|
|Gisdol replaces Labbadia at Hamburg|
|Ibrahimovic threatened me over Pogba deal - Raiola|
|Balotelli could make Nice return against Krasnodar|
|Southampton deserved to win – Bilic|
|Podolski takes aim at Mourinho over Schweinsteiger treatment|
|Atletico midfielder Augusto suffers ACL injury|
|Sagna: More to Aguero than goals|
|Errors are urgent matter for Schalke - Weinzierl|
|Puel delighted with sublime Southampton second half|
|Simeone praises ´decisive´ Gameiro|
|Noble: West Ham can´t get any worse|
|Pjanic: I will play wherever Allegri needs me|
|West Ham 0 Southampton 3: Defensive woes pile pressure on Bilic|
|Kondogbia makes the same mistakes often – De Boer|
|Gray backed by Dyche after ban for abusive social media posts|
|Gabriel needs time to get used to Serie A - Ausilio|
|Atletico Madrid´s Gimenez and Augusto doubts for Bayern Munich clash|
|Atletico Madrid 1 Deportivo La Coruna 0: Griezmann downs 10-man Depor|
|Angry Spalletti slams Roma players´ attitude|
|Liverpool have unbelievable quality - Milner|
|Simeone´s son Giovanni scores first Serie A goal|
|Ivanovic: Chelsea let Conte down|
|Inter 1 Bologna 1: Battling Bologna end Inter streak|
|Guardiola: Top-four finish very tough for Man City|
|Rodgers expecting tough test against City and Aguero|
|Zamparini admits Balotelli interested Palermo|
|Former Swansea, Arsenal great Mel Charles dies|
|Asamoah, Rugani ruled out for up to seven weeks|
|Totti reaches 250 Serie A goals in Roma defeat|
|Alves makes LaLiga history as Valencia see off Leganes|
|Guardiola rues De Bruyne injury as Man City await scan|
|Las Palmas draw could prove costly, admits Morata|
|Gabriel explains choosing Inter over Juventus|
|Hamburg dismiss Labbadia|
|West Ham players expect Payet´s free-kick magic - Antonio|
|Man City must tell Guardiola to stop, says Toure´s agent|
|Hamsik thrilled to reach 100 Napoli goals|
|Zabaleta warns Man City over Celtic backlash|
|MLS Review: Red Bulls, Toronto into play-offs|
|´We were unlucky´ - Bale|
|Guardiola keen for Spurs test|
|Rodgers: I never fell out with Sterling|
|Wenger hails ´different´ Walcott|
|Mazzarri backs Deeney for England call-up|
|Mamelodi Sundowns and Zamalek reach CAF Champions League final|