Bayern Munich thrashed Union Berlin 4-0 on Saturday to open a seven-point lead at the top of the Bundesliga as Robert Lewandowski netted twice to pass the milestone of 30 league goals this season.Bayern went ahead at the Allianz Arena when Coman hit a superb shot into the top corner from outside the area on 16 minutes. Teenage French defender Tanguy Nianzou then headed in his first Bayern goal before Lewandowski converted a penalty to make it 3-0 at the break.Bayern serve up another merciless performance 💥 pic.twitter.com/sKiOoXPctt— 433 (@433) March 19, 2022 After drawing their previous two league games, Bayern were all business by dominating possession and never allowing Union to settle. Lewandowski has chalked up 43 goals for Bayern this season in all competitions. He is one of four players out of contract in 2023, yet Bayern are reportedly yet to offer him an extension.The second half had barely begun when Lewandowski, who showed no signs of a midweek knee-injury scare, made it 4-0 by sweeping in a Jamal Musiala pass. At the other end, Bayern defender Lucas Hernandez cleared a shot from a tight angle by Union striker Taiwo Awoniyi off the line. The tempo dropped early in the second half, but Bayern were rarely tested thereafter as they cruised to the win.How do you keep players focused when the best of them could soon be gone?Even Joshua Kimmich, who is notoriously hard on his team’s performances, was happy with Bayern’s win.”We allowed them two or three chances in the first half that were unnecessary, but it was still a deserved victory. The attitude and approach were right.”The victory was Bayern goalkeeper Manuel Neuer’s 311th in the Bundesliga, breaking the record he previously shared with Oliver Kahn.BUNDESLIGA – ROUND 27FridayBochum – Borussia Monchengladbach 0-2 (0-0)/Plea 55, Embolo 61/SaturdayGreuther Furth – Freiburg 0-0 Hertha – Hoffenheim 3-0 (1-0)/Stark 39, Belfodil 63, Tousart 74Mainz – Bielefeld 4-0 (1-0)/Burkardt 1, 75 pen, Niakhate 65 pen, Ingvartsen 79 pen/Stuttgart – Augsburg 3-2 (1-2)/Anton 44, Marmoush 79, Tiago 85 – Hahn 6, Gregoritsch 45+1/Bayern – Union Berlin 4-0 (3-0)/Coman 16, Nianzou 25, Lewandowski 45+1 pen, 47/Sunday17:30: (1.48) RB Leipzig (4.50) Eintr.Frankfurt (7.75)19:30: (3.05) Wolfsburg (3.40) Leverkusen (2.45)21:30: (3.35) Koln (3.45) Dortmund (2.15)***odds are subject to change