Xabi Alonso praised his Bayer Leverkusen side for showing resilience to defeat Mainz on Friday night and set a new unbeaten record for a Bundesliga side. The victory moved Leverkusen 11 points clear at the top of the German top-flight over Bayern Munich — who have a game in hand — and set a new unbeaten record for a German top-flight club of 33 matches across all competitions. Alonso’s side have won 29 and drawn four of their 33 matches to date this term — the longest such run in German football history. Former Arsenal midfielder Granit Xhaka gave Leverkusen a third-minute lead,...