Union Berlin defeated promoted St Pauli 1-0 on Friday evening to claim their first Bundesliga win of the season. Union played out a 1-1 draw in their league opener at Mainz last weekend, but kept all the three points in their first home game this term. The triumph came thanks to Benedict Hollerbach’s goal in the 34th minute. Lucas Tousart had his effort denied by goalkeeper Nikola Vasilj, but in the resulting corner, the ball fell to Hollerbach, who fired a powerful first-time effort from the edge of the box into the net. Union played without Robin Gosens and managing director Horst Heldt conf…