我雖然沒有寫過信，不過在rf.com官網有滿多粉絲都曾經寄信要簽名和分享他們的經歷，Roger也有公開壹個寄信的地址在官網，官網上的說法是這樣的：
POSTAL ADDRESS
If you would like to send me letters, cards or pictures please send them to the address below.
Please note that articles received by mail (balls, photos, etc) to be autographed are not accepted and will not be returned.
AUTOGRAPH CARDS
If you would like to order signed autograph cards we kindly ask you to enclose a return envelope (format C6, 162 x 114mm) with the appropriate postage and your address written on it.
Please note that all letters without postage will not be returned.
You can include special coupons for international mail or two US-Dollar for postage.
Please send the envelope, any cards or letters to the following address:
R. FedererPostfach4103 Bottmingen
SWITZERLAND
Thank you for your mail!
寫信問他要簽名時，先寫好壹個有自己回郵地址的信封(尺寸162 x 114mm)放在寄給他的信裏。把妳的回郵信封對折放進去就好了。而且回郵信封最好至少能裝壹張明信片大小，回郵地址可以寫中文，只要國家名字寫英文就好啦。（寫P.R.China"在最後壹行就行）。
寄去的信可以簡單有禮貌，放2塊美金在裏面當作回郵資，（如果沒有美金，到郵局去問問看有沒有壹種國際郵資代用券類似這樣的代券賣，在費德勒官網上面這個說明中也提到special coupons for international mail"， 放這個也行)。寄出去以後壹般要等幾個禮拜或是1－3個月都可能，所以要很耐心哦。
這裏是我替大家寫的樣品信，妳們可以修改壹下，個性化之後再寄出去：
Dear Roger,