Toluca can ensure the CONCACAF Champions League of an all-Mexico final, if they avoid defeat at home to Alajuelense on Tuesday.
Jose Cardozo's men took the upper hand in their two-legged semi-final tie with their Costa Rican opponents, when they claimed a 1-0 road win in April.
Paulo da Silva scored the all-important away goal for Toluca, putting the chances of an all-Liga MX final one step closer to fruition with the second semi-final between Mexican outfits Tijuana and Cruz Azul.
Alajuelense have some history in their favour heading to Toluca's Estadio Nemesio Diaz, as the club won their only visit there 1-0 in the same competition in September 1999.
The same result would force the tie into extra-time, in which the away goals rule would become redundant.
Alajuelense are hopeful of turning the tie around, with goalkeeper Alfonso Quesada claiming his side created plenty of chances in the first leg and just needed to be more clinical in front of goal.
"The team continues to be motivated. The only thing lacking (in the first leg) was a goal. We know that we had chances. They didn't fall, but we haven't lost hope," Quesada said.
"We have objectives and we want to fulfil them and that can be done. We know that we have the confidence to be able to get a result there."
Alajuelense striker Jonathan McDonald missed a penalty at the Estadio Alejandro Morera Soto, but the front man said he had put the miss behind him.
"I have the mental fortitude, it is one of my qualities," McDonald said.
"I have my mind already set on the next match. I take responsibility. I took the ball and I missed the penalty.
"Now to keep the head up and get past this bitter pill."
There is only one goal between Tijuana and Cruz Azul heading to the second leg at the Estadio Azul.
Tijuana lead the leg courtesy of Cristian Pellerano's late penalty for the first-leg hosts, although Cruz Azul are confident of arresting their deficit, with coach Luis Fernando Tena bullish about their chances.
"Our team played a good game (in the first leg). In a week we will make it to the final. We will turn it around," Tena said.
"It will be a very interesting match next week."
|4||P. da Silva|
|Coach: J. Cardozo|
for I. Brizuela 84'
for P. Velázquez 85'
for M. Ponce 90+3'
|Martinez rules out panic buys|
|Gilardino targets Fiorentina goals|
|Milan agree Bocchetti loan|
|League Two Preview: Cambridge and Luton prepare to renew rivalries|
|Ronaldo hit with two-match ban|
|West Brom complete McManaman deal|
|Sullivan hits back in Sakho row|
|Richards: Cuadrado suited to Premier League|
|Figo to challenge for FIFA presidency|
|Inzaghi out to freshen up struggling Milan|
|Wigan agree a fee for Mckay|
|Carver eyes strong finish|
|Bowen cools talk of Stoke swoop for Sandro and Traore|
|Lazio-bound Morrison lands in Rome|
|Mourinho fined £25k for ´campaign´ claims|
|Mainz bring in Castillo|
|Villa: Lambert will not be sacked|
|Monk hopeful of adding new faces|
|Sainsbury ready to replace Franjic|
|Beckenbauer hopeful of Guardiola stay|
|Mourinho hits back at Costa critics|
|Rodriguez grateful for ´fundamental´ Ronaldo support|
|La Liga Preview: Real want revenge against Socieded|
|No Dallas move for Essien|
|Bale rubbishes United link, Ronaldo rift|
|Sahin in ´good shape´ for Bundesliga resumption|
|Rodgers slams Costa´s stamp collection|
|Under-fire Inzaghi urges patience|
|Rodgers: Courtois saved Chelsea|
|Mashaba wants lessons to be learnt after AFCON exit|
|Mourinho refuses to wade into Costa incidents after Chelsea win|
|Football League Review: Bent double sends Derby second, Rotherham triumph|
|Chelsea 1 Liverpool 0 (aet, agg 2-1): Ivanovic settles action-packed League Cup semi-final|
|Milan 0 Lazio 1: Inzaghi future plunged into further doubt|
|Neymar dreaming of ending Brazil´s home hoodoo|
|South Africa 1 Ghana 2: Late Ayew winner seals qualification|
|Senegal 0 Algeria 2: Mahrez and Bentaleb dump Senegal out|
|Bocchetti poised to join Milan on loan|
|De Rossi suffers calf injury|
|Montano accuses Oldham of double standards after Evans saga|
|Bojan out for the season with ruptured cruciate|
|Cameroon v Ivory Coast: Renard defends Yaya Toure|
|Yanga-Mbiwa makes Roma move permanent|
|Guinea v Mali: Quarter-final berth on offer in Mongomo|
|Thohir: Inter not reliant on European football|
|Bremen land Vestergaard|
|Allegri refuses to rule out Cassano move|
|Mexes handed four-game ban after Lazio dismissal|
|Joyce reveals Valdes´ inspirational team-talk|
|CAF announces AFCON venue switches|
|Alcacer commits future to Valencia|
|Postecoglou calls for Aussie ´energy´|
|Everton confirm Eto´o departure to Sampdoria|
|Pochettino to stick with Vorm despite cup error|
|Barcelona are not favourites against Atletico, says Luis Enrique|
|Allegri wary of Parma backlash in Coppa Italia|
|Zidane urges Real to tie Ancelotti down|
|FIFPro: Transfer system failing football|
|Anderlecht condemn Standard´s Defour banner|
|Australia 2 UAE 0: Socceroos ease into home final|
|Barca overhaul youth system|
|FIFPro demands clubs respect contractual obligations|
|Mahmoud targeting World Cup place with Iraq|
|Fabregas wants Chelsea to show winning mentality|
|Rangers borrow £10m from Ashley´s Sports Direct|
|Lyon face anxious wait over Lacazette|
|Undermanned Lazio recall Perea|
|Ki wants South Korea to prove their superiority|
|Ghana´s Gyan wary of South Africa|
|Mashaba urges South Africa to attack|
|Benitez: Napoli deserved to win|
|Pacos de Ferreira 1 Benfica 0: Leaders fail from the spot|
|Serie A Review: Higuain at the double in controversial Napoli win, Udinese see off Empoli|
|I´m glad Rochdale haven´t made the news - Hughes|
|Getafe 2 Celta Vigo 1: Hosts come from behind for first win in 10|
|Real hit back at media reports over transfer dealings|
|Rochdale 1 Stoke City 4: Joy and angst for Bojan as Premier League side progress|
|Turkish Super Lig Review: Kuyt at the double in Fenerbahce win, Besiktas back on track|
|Senegal v Algeria: Morale is high, insists Gourcuff|
|Cassano leaves beleaguered Parma|
|Copa del Rey Preview: Atleti look to overturn Barca advantage, Espanyol wary|
|Atletico Madrid v Barcelona: Griezmann targets second-leg fightback|
|Sheffield United v Tottenham: Clough expects fired-up Spurs for second leg|
|Cape Verde 0 Zambia 0: Stalemate sends both sides out|
|Democratic Republic of Congo 1 Tunisia 1: Both teams qualify for quarter-finals|
|FA Cup fifth round: Middlesbrough handed Arsenal test|
|South Africa v Ghana: Must-win game for Mashaba´s men|
|Parma v Juventus: Serie A leaders strong favourites to reach semi-finals|
|Van Praag planning to stand for FIFA presidency|
|Inter snap up Brozovic|
|Van Persie unsure of long-term United future|
|Broken metatarsal rules El Shaarawy out for at least six weeks|
|FIFA: No disciplinary proceedings against Real|
|No Plan B if Guardiola goes - Rummenigge|
|Millwall take Hooiveld on loan|
|Chile v United States: Klinsmann has high hopes for young stars|
|Carver to lead Newcastle until end of season|
|Shenaishil taking positives from last-four exit|
|Neymar happy with life at Barca and Messi relationship|
|Lucas Silva ready for life at Real|
|Milan ´always with Inzaghi´ - Menez|
|Rodriguez living the dream at Real|
|Stielike expecting Australia in final|
|Mourinho not dwelling on Bradford defeat|
|Schweinsteiger under no pressure to extend Bayern contract|
|Herd heads to Wigan on loan|
|Inter defensive duo suffer hamstring tears|
|UAE coach Ali eyes Asian Cup final|
|Gattuso dreaming of managing Rangers|
|Fiorentina agree return of Gilardino on loan|
|Sakho hits back at critics|
|South Korea 2 Iraq 0: Kim books sixth Asian Cup final place|
|Sturridge could return against Chelsea|
|Zinnbauer backs Drobny as Hamburg first choice|
|Drogba targeting Chelsea stay|
|Postecoglou confident Australia squad can progress|
|UEFA does not have the courage to run against me - Blatter|
|Foster: Anichebe unplayable|
|Australia v UAE: Japan´s absence a boon for Asian Cup hosts|
|Milan v Lazio: Injury-hit visitors aiming for back-to-back wins|
|Trezeguet confirms retirement|
|No ´major problems´ with Nicolas Frey´s head wound|
|Strootman injury not "serious" - Garcia|
|No Paraguay, USA for retiring Riquelme|
|Saint-Etienne did not try to play football - Blanc|
|Primeira Liga Review: Sporting move within one point of Porto|
|La Liga Review: Parejo downs Sevilla, Resino starts with a point|
|Serie A Review: Juve go seven points clear as Roma draw again|