MUNICH, Germany, Dec 14 (Reuters) - Bundesliga leaders Bayern Munich needed an 87th-minute penalty from forward Harry Kane to rescue a 2-2 home draw against basement side Mainz 05 in the Bundesliga on Sunday but still managed to extendtheir lead at the top to nine points.

Goals from Lee Jae-sung and Kacper Potulski had put the visitors in the driving seat after Lennart Karl's first-half opener for the Bavarians, before England captain Kane netted his 18th league goal of the season to save the hosts' blushes and narrowly avoid their second league loss of the season.