I was lucky enough to be given this Leuk The Duck pin while in Australia a number of years ago by a Titleist ambassador. Most Australians know the story but for those that don't tour professional Jarrod Lyle passed away in 2018 from acute myeloid leukemia. He was a big supporter of Titleist and FJ, his trademark were his yellow hats! He was also a strong family man...it reminds me how fragile life is as well as how much Titleist supports these great causes. So if you see pros wearing yellow hats or yellow shirts they may be doing this in respect to Lyle.
He was a great ambassador for Acushnet.
Cheers