Fan protests halted another game in the Bundesliga when supporters threw tennis balls and sent remote control cars careening around the penalty area during Werder Bremen’s 1-0 win over Cologne. The match was halted for almost 10 minutes early in the second half. Fans have been protesting at games across the country against a proposed deal to sell a future stake in the league to a private equity investor. Players kicked the tennis balls off the pitch as two bright orange cars sped up and down the penalty box doing flips and about turns.