The yield spread between the 10-year Greek and German benchmark bonds widened sharply to a new record high of 13.03 pct in the domestic secondary bond market on Friday, reflecting market worries over developments in the Greek public debt. The Greek bond was yielding 16.12 pct in midday trading. Also, the Greek CDS jumped to 13.44 pct, while the two-year benchmark bond yielded 23.67 pct.