FREIBURG, Germany — Union Berlin’s stand-in goalkeeper Matheo Raab made a last-minute diving save with his injured right hand on his top-division debut to ensure his team held on for a 1-0 win at Freiburg in the Bundesliga on Sunday.Union had already used all its substitutions when Raab injured his hand in a collision with Freiburg’s Bruno Ogbus while diving to punch away a high ball in added time.“In that moment I only felt pain,” Raab told broadcaster DAZN. “We couldn’t make any more changes and I wanted to somehow play out those last few minutes. There’s nothing you can do but grit your teeth, somehow get the glove back on and get this thing done.”Raab used the same hand for an acrobatic diving save to keep out Niklas Beste’s curling shot and ensure Union took the win. Jeong Woo-yeong had put the Berlin team in the lead with a low shot earlier in added time.An injury to regular starter Frederik Ronnow meant Raab was playing in the Bundesliga for the first time since arriving at Union in July. He said he powered through with adrenaline. “I waited so long for this and didn’t want it taken away.” Union rose two places to ninth, one place behind Freiburg.Also Sunday, Deniz Undav s …