Arsenal are into the Champions League final for the first time in 20 years, grinding out a tough semifinal win over Atlético Madrid that finished 2–1 on aggregate. Mikel Arteta has matched Arsène Wenger as the only other Arsenal manager to lead the club to European soccer’s annual showpiece, but will hope to go one better than the legendary Frenchman’s 2006 team, who were beaten by Barcelona in Paris. This semifinal was delicately balanced at 1–1 following last week’s first leg in Madrid, handing Arsenal a slight advantage playing the second leg at home. Bukayo Saka’s rebound goal on the stroke of halftime was decisive on the night, followed by a hard, scrappy defensive performance to see it through. The Gunners will now meet either Paris Saint-Germain or Bayern Munich in Budapest on May 30. That tie will be decided in Munich on Wednesday, with the teams currently separated by a single goal in the aggregate scoreline after last week’s pulsating 5–4 PSG win last week.…