The gross and average were up sharply at the opening session Monday of the New Zealand National Yearling sale at Karaka."We've just seen one of the strongest opening sessions ever recorded at Karaka," said New Zealand Bloodstock's marketing manager Julia Naismith of the premier session that saw the gross up 36% and the average 32%.The gross for the 62 head sold was NZ$6,695,500 (U.S.$3,675,763), an average of NZ$107,984 (U.S.$59,282). The median rose from NZ$62,000 to NZ$70,000 (U.S.$38,429).The highest price of the session was NZ$410,000 (U.S.$225,086) paid by trainer Graeme Rogerson for a filly by leading international sire Danehill. Consigned by Curraghmore Stud, agent, the Australian-bred filly is out of the Lyphard mare Casuarina Beach.Rogerson was the leading buyer at the session, purchasing four lots for $NZ845,000.Just behind at NZ$400,000 (U.S.$219,596) was a colt by Stravinsky purchased by James Bester Bloodstock. Out of the Nuage d'Or mare Coutet, the colt is a half-brother to group I winner Allez Suez (by Canny Lad). He was sold by Pencarrow StudStravinsky was the leading first crop sire and ranked third overall. He had six sell for an average of $NZ120,833.Danehill was the leading sire on the first night, with three lots sold at an average of $NZ263,333. Zabeel had seven sell for an average $NZ226,429.