For the general donations you can specify exactly how things are used. My donation is split three ways, with one of them being to a specific scholarship fund at a particular school.
I'm not sure if the normal dialing-for-dollars campaign is set up for athletics donations, but I would hope that they are. I was going to suggest using the Athletics specific giving page, but that is not a secure webpage which keeps me from recommending that route.
The general giving page (see below) let's you specify Athletics and the "Gift is to be used for" space should let you specify exactly how you want the funds to be used (Football: Indoor Practice Facility, Field Hockey, etc.).
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