If I understand your question, you are volunteering for PGA events and incur expenses as a result of this activity.
The PGA is a 501(c)(6) tax exempt organization. As a result, your expenses are not deductible as a charitable contribution. The fact that the PGA makes charitable contributions have no impact on the deductibility of your expenses.
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.
