Karim Adeyemi scored a hat-trick and Serhou Guirassy a brace as Borussia Dortmund stormed to the top of the Champions League standings with a 7-1 demolition of Celtic, while Manchester City, Inter Milan, Arsenal and Barcelona got first wins. Emre Can and Felix Nmecha were also on target as rampant Dortmund followed up on their opening 3-0 at Club Brugge, leading 5-1 at half-time against hapless Glasgow opponents en route to their biggest win in the elite event. Also on six points are French debutants Stade Brest with a 4-0 triumph at Red Bull Salzburg, and Bundesliga champions Bayer Leverkusen…