BERLIN - Bundesliga leaders Bayer Leverkusen battled past Union Berlin 1-0 on Saturday to equal a league record unbeaten run of 28 consecutive matches and all but secure their first league title with a 16-point advantage at the top and six matches remaining.

Xabi Alonso's team, who have not lost in 41 matches across all competitions this season, can clinch their maiden Bundesliga title and first trophy in 31 years with a victory at home against Werder Bremen next week.