Black Mountain sponsored players Jazz Janewattananond and Berry Henson posted an even-par 72 and 74 respectively in the first round of the ICTSI Philippine Open on Thursday.

The 18-year-old Thai traded three bogeys against three birdies to trail opening round leaders Korean-American Chan Kim and Bangladeshi Siddikur Rahman by six shots going into the second round of the Asian Tour event.

American Henson meanwhile got his first birdie on the par-four seventh but struggled in his back-nine as he dropped four shots on holes 10,11, 15 and 18 with only a birdie-three on 12 as his saving grace.