Borussia Dortmund have sacked head coach Nuri Sahin after their Champions League defeat at Bologna. The German side have lost four successive matches in all competitions since the winter break. The 2-1 defeat against the Italian club on Tuesday was their third loss in this season's Champions League for last year's beaten finalists.

Borussia Dortmund has terminated the contract of head coach Nuri Sahin after a series of poor performances, including a recent defeat to Bologna. With the team's form declining, Dortmund is placing Mike Tullberg in temporary charge as they try to salvage their Bundesliga season.

Was Tuesday's 2-1 Champions League defeat to Bologna Nuri Sahin's last game as Borussia Dortmund coach?After Friday's 2-0 defeat to Eintracht Frankfurt - Dortmund's third in a row - managing director