It was a horrible day for Hamburg on Sunday and especially for defender Rick van Drongelen.
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Hamburg went into the Bundesliga.2 final day of the season still in with a chance of reaching the promotion playoff against Werder Bremen.
However, Hamburg suffered an embarrassing 5-1 loss to Sandhausen, with Van Drongelen having an awful game.
The Dutchman not only scored an own goal to make it 1-0, but he also suffered a knee injury in the second half. Scans have now shown the 21-year-old has ruptured the anterior cruciate ligament.
Van Drongelen will undergo surgery and is likely to be out for six months, which would rule out any possibility of a summer transfer.