Matsuda still in danger a day after cardiac arrest

Former Japan captain Yuji Nakazawa says he is still in shock after ex-teammate Naoki Matsuda suffered a cardiac arrest during training.

Matsuda collapsed after finishing a 15-minute warmup run during training for J-League club Matsumoto Yamaga on Tuesday and was rushed to a hospital.

Matsumoto Yamaga officials said Wednesday that he is still unconscious and remains in serious condition.

Nakazawa says ''I can't believe it'' and ''I hope he recovers consciousness quickly and we can hear his voice again soon.''

The 34-year-old Matsuda played 40 times for Japan, including at the 2002 World Cup in Japan and South Korea. He played a total of 385 J-League games for the Yokohama F Marinos from 1995 to 2010.