Bayern Munich eked out a 1-0 home win against Union Berlin in their postponed Bundesliga game on Wednesday to bounce back from the loss against Werder Bremen last week and cut the gap at the top of Bundesliga to four points. The game had been postponed in December because of heavy snowfall in Munich. Bayern were eager to make amends for their 1-0 defeat on Sunday and the visitors had to soak up intense early pressure. The Union keeper, Frederik Ronnow, managed to stop Matthijs de Ligt’s header and Dayot Upamecano’s rebound in the seventh minute before tipping wide Kingsley Coman’s low shot a little later. The winger Coman again went close to putting Bayern in front in the 23rd but his effort sailed just wide of the post with Bayern having close to 80% possession in the first half. Raphaël Guerreiro broke the deadlock seconds after the restart, drilling in on the rebound after Harry Kane’s shot had bounced off the post and into the Portuguese’s path. Union rarely threatened and had their head coach, Nenad Bjelica, sent off in the 74th minute after he shoved Bayern’s Leroy Sané twice in the face after the player went to get the ball from the Union coach. Bayern move up to 44 points in second place, with Leverkusen leading the title race on 48.