The Arsenal return to the Emirates for the second leg of their UEFA Champions League quarterfinal against Sporting CP, with the tie finely balanced after a competitive first meeting that left everything open heading into London.
Mikel Arteta’s side have turned their strong home form in Europe into a defining factor this season, using quick transitions to control knockout ties at the Emirates Stadium, while Rui Borges’ team arrive full of confidence.
With a place in the semifinals on the line, the stakes are clear: every goal, substitution and tactical adjustment could define the outcome of the tie. The margin for error is minimal, setting up a tense and decisive night.
What happens if Arsenal beat Sporting CP today?
Arsenal would secure their place in the Champions League semifinals if they beat Sporting CP today in the second leg of the quarterfinal. According to the current knockout bracket, they hold the advantage after the first leg.
Declan Rice of Arsenal during the Premier League match against Bournemouth in 2026 (Source: Shaun Botterill/Getty Images)
A win would set up a semifinal clash against Atletico Madrid, who already secured their place in the next round after eliminating Barcelona on aggregate. That means they would immediately face another high-intensity knockout tie.
With momentum on their side after a strong European campaign, Arsenal would rely once again on their home form and structured attacking transitions to compete at this stage, where margins become significantly smaller.
What happens if Arsenal and Sporting CP tie today?
If Arsenal Fand Sporting CP draw today, the quarterfinal remains open and will still be decided by the total aggregate score across both legs. Since UEFA no longer uses the away goals rule, a tie after 90 minutes in the second leg does not produce an automatic winner.
Instead, if the aggregate score is level at full time, the match would go to extra time and potentially penalties to decide who advances. This scenario keeps both teams alive, with everything depending on the final outcome of the second leg in London.
What happens if Arsenal lose to Sporting CP today?
If Arsenal lose to Sporting CP in the second leg, they would be eliminated from the UEFA Champions League quarterfinals. Rui Borges’s team would overturn the aggregate score and secure a place in the semifinals.
In that scenario, it would represent a major opportunity for Sporting on the continental stage, as the Lisbon-based club have never won the UEFA Champions League, with their only European trophy being the 1963–64 Cup Winners’ Cup.
