A sharp-eyed clerk at a Salt Lake golf course pro shop noticed a man wearing underwear on his head and wielding a big knife. After a struggle, the brief-or-boxer wearing thief fled. Exciting golf-cart chase and capture ensued, with golfers no doubt brandishing 9-irons and mashie niblicks or whatever. Prosecutors charge alleged robber who wore underwear mask – Salt Lake Tribune A man wearing underwear on his head to hide his identity during a stickup was charged Wednesday with aggravated robbery. The 48-year-old man was chased down two days earlier by customers in a golf cart outside a South Salt…