McCall, who last year became the first golfer in 24 years to win the New Zealand Stroke Play and New Zealand Amateur in the same year, is in a share of second on the individual leaderboard behind France's Paul Elissalde (68).
The four New Zealand players arrived at the event with thick sideburns resembling the character of Wolverine off X-Men but the facial hair is much more about team bonding than attempting to scare the opposition.
"Since we've all been together since January, we decided to grow sideburns just to boost our team spirit, but we don't mind if it intimidates a few people," said McCall, who finished tied 13th and leading Kiwi at last year's Eisenhower Trophy.
"I am pretty happy. I did what I needed to do all day. I got the ball up and down and played well. A pleasurable moment was when my own teammates were hassling me down the last and I chipped in to put a smile on my face."
Following the event, the New Zealand team will compete at next week's South African Stroke Play Championship at the Ernie Els designed Oubaai Golf Club in George.