Kiessling nets three for leaders
Stefan Kiessling scored a hat-trick as Bayer Leverkusen defeated Stuttgart 4-0 to go three points clear at the top of the table.
Kiessling opened the scoring and also finished proceedings with his second and an 87th-minute penalty. Eren Derdiyok got the other.
Bayern Munich moved up to fourth with a 3-0 win away to Hannover.