Gio Reyna came off the bench in the 59th minute with Borussia Dortmund trailing newly promoted 17th-place Holstein Kiel 3-0. He scored his second goal of the season with a 20-yard shot in the 71st minute, but BVB lost 4-2. The 22-year-old earned Bild Zeitung’s highest rating among BVB players.

With two straight losses, Dortmund has one win in its last six outings, sparking speculation that Coach Nuri Sahin’s days are numbered.

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Soccer America Executive Editor Mike Woitalla has written freelance articles about soccer for more than 30 media outlets in nine nations. The winner of eight United Soccer Coaches Writing Contest awards,...