Fans could face compensation claims from clubs if a match is abandoned due to protests, a German sports lawyer has said in the wake of latest incidents on Saturday in the two top divisions. The second tier match between Hertha Berlin and SV Hamburg was interrupted for more than half an hour because fans threw tennis balls onto the pitch. Another incident after the restart would have seen the game abandoned. The Bundesliga match between Freiburg and VfB Stuttgart was stopped in each half when fans threw chocolate coins and other objects onto the playing field. Chocolate coins were also thrown a…