Clark injured, out up to four weeks

American midfielder Ricardo Clark has pulled a muscle in his right calf, delaying his Bundesliga debut by up to four weeks and putting him in doubt for the United States' exhibition game at the Netherlands on May 3.

Clark hasn't played since signing for Eintracht Frankfurt in January, with coach Michael Skibbe saying the American needed a few weeks to get back in top shape.

The former Houston Dynamo midfielder hasn't played regularly since the MLS playoffs ended in November. The 26-year-old Clark became a free agent after his contract with Houston expired.