RB Leipzig came from behind to become just the second Bundesliga side to defeat Thomas Letsch’s Bochum at the Vonovia Ruhrstadion this term, as a 4-1 win came courtesy of a remarkable four-minute second-half treble.Meanwhile, Karim Adeyemi’s wonder strike helped Borussia Dortmund to break their run of three consecutive away draws and boost their Bundesliga top-four chances with a 2-0 win over Union Berlin.Leverkusen fans love this! Young lions roar, but Bayern’s pride is lost in the Black ForestAn imperious home campaign so far came to a head for Bochum with a remarkable 3-2 win over Bayern here two weeks ago, and they carried right on from that in the midst of a frenzied first 10 minutes. Xavi Simons couldn’t beat veteran stopper Andreas Luthe on his first appearance for Der Blau in eight years, and that miss was thoroughly punished just moments later. Maximilian Wittek was the recipient of a free-kick from distance, and his powerful, swerving strike proved too hot to handle for Péter Gulácsi, who perhaps lost ground in his battle for Leipzig’s permanent number-one spot as he could only palm it into the net.Maybe sensing Gulácsi’s frailty, both Kevin Stöger and Anthony Losilla soon saw attempts fly wide as they tried their luck from distance, before Xavi was denied the equaliser after he was ruled offside having squeezed his shot inside the near post. That turned out to be a warning that Bochum didn’t heed, not that they could have done much to stop Dani Olmo cutting inside and whipping into the top corner from outside the area – the injury-plagued Spaniard’s first league goal since last August.It looked as though Bochum were growing into the game – almost taking the lead through Bernardo – but substitutions from Leipzig led to a stunning treble in the space of just a few second-half minutes. Amadou Haidara slipped through Loïs Openda, and Luthe couldn’t push the shot away as the Belgian found the net with his first touch since his introduction. Yussuf Poulsen – the other striker brought on by Marco Rose – emphatically made his mark with a goal and assist just a couple of minutes later, first sending Xavi away to find the net via Ivan Ordets’ lunging foot, before tapping in one of his own as the roles reversed.The shellshock from that horror spell set in for Bochum, and things were made even worse when Moritz Kwarteng became their first player sent off this season after lashing out on Openda. A ninth win in just 11 historical meetings between these sides is the perfect springboard for Leipzig to try to overturn a deficit at Real Madrid in the week, while Bochum still have a nine-point cushion to the bottom two despite possessing the second-worst defensive record in the division.In the German capital, Union had no sympathy for a Borussia Dortmund side reeling after a shock 3-2 loss to Hoffenheim last weekend. The Iron Ones almost compounded the visitors’ woes after just six minutes when Lucas Tousart was found unmarked in the area, but he dragged his low shot across the goalmouth and inches wide.##EDITORS_CHOICE##Defensive foundations for Nenad Bjelica’s side, who conceded only two goals in their last five home matches, initially proved a serious barrier for Dortmund as the visitors struggled to get out of their half for the opening 30 minutes. But Edin Terzić’s men persisted, and Nico Schlotterbeck nearly came back to haunt his former club when he volleyed towards goal from three yards out, only to be repelled by Frederik Rønnow’s scrambling save. Suddenly, BVB came to life, and Karim Adeyemi ensured the visitors would lead at the break after controlling on the edge of the area and thumping an unstoppable strike in off the crossbar.Union’s chances of completing a comeback were slim, having failed to win after going behind in the Bundesliga this season prior to kick-off. A moment of slack Dortmund defending almost gave the home side a perfect opportunity to restore parity, though, as Ian Maatsen’s poor touch in the area was seized upon by Kevin Volland, but the striker’s resulting shot was turned over the crossbar by Alexander Meyer. Chances were rare following that Dortmund let-off and BVB struck on the counter in the closing moments, and Maatsen sealed the points by striking low under the onrushing Rønnow.In the end, failure to capitalise on a fast start proved costly for Bjelica’s Union, who suffered their first home loss in the Bundesliga since the Croatian manager took charge in late November. This victory was the perfect response for Dortmund, and the win ensures Terzić’s side maintain their one-point advantage over fifth-placed RB Leipzig.BUNDESLIGAFriday Freiburg – Bayern Munich 2-2 (1-1)/Gunter 12, Holer 87 – Tel 35, Musiala 75/Saturday Heidenheim – Eintr.Frankfurt 1-2 (0-1)/Pieringer 59 – Gimber 39 og, Nkounkou 49/Union Berlin – Dortmund 0-2 (0-1)/Adeyemi 41, Maatsen 90/Bochum – RB Leipzig 1-4 (1-1)/Wittek 7 – Olmo 30, Openda 68, Ordets 71 og, Poulsen 73/Mainz – M’ gladbach 1-1 (1-0)/Burkardt 12 – Ngoumou 55/Darmstadt – Augsburg 0-6 (0-5)/Tietz 2, 84, Jensen 12, Demirovic 20, 29, Vargas 25/20.30: (3.25) Wolfsburg (3.45) Stuttgart (2.20)Sunday 17.30: (8.50) Koln (4.90) Leverkusen (1.37)***odds are subject to change