Pressure builds on Dortmund boss Sahin after loss at Kiel

Borussia Dortmund's struggles in the league continued with a 4-2 loss at Holstein Kiel on Tuesday, raising the heat on under-fire coach Nuri Sahin.

Dortmund were heavily favoured against their promoted opponents, who sit second-last in the table, but were overrun as Kiel scored three goals in 22 first-half minutes.

Shuto Machino, Phil Harres and Alexander Bernhardsson found the net to have Kiel up by three at half-time.

Dortmund's Gio Reyna and Jamie Gittens scored in the second half but the visitors could not pull off an unlikely comeback, with Jann-Fiete Arp scoring Kiel's fourth in stoppage time.

Kiel have now won two of their last three to boost their chances of avoiding a direct relegation.

With half the season played, Dortmund sit eighth, 14 points behind league leaders Bayern Munich.

Questions will continue to be asked of coach Sahin, who replaced Edin Terzic in the summer, despite the latter taking Dortmund to the Champions League final in June.

With want-away forward Donyell Malen joining Aston Villa just an hour before kick-off, Sahin handed teenage forward Julien Duranville a starting XI debut.

In cold, foggy conditions on Germany's northern coast, Dortmund dominated possession for much of the first half-hour, but were unable to break through the dogged hosts.

With 27 minutes gone, Kiel forced Julian Brandt into an error near his own penalty box, Bernhardsson then found Machino who blasted in the opener.

Harres, a fourth-division player this time last season, doubled Kiel's lead with a clever header on the counter shortly afterwards.

Kiel hit a third just before half-time, Bernhardsson tapping in a Harres cross to have Dortmund reeling.

Sahin made four attacking changes in the opening 15 minutes of the second half as Dortmund pursued an unlikely comeback.

But despite goals by Reyna and Gittens, the visitors were unable to find a third, with local boy Arp scoring in the dying moments to seal a famous Kiel win.

Later on Tuesday, champions Bayer Leverkusen can close the gap on league leaders Bayern Munich with a victory at home against fifth-placed Mainz.