U.S. Olympic skiing champion Bode Miller has filed legal papers demanding the mother of his newborn son relocate to California so he can be closer to his child.

The star's ex-girlfriend Sara MCKenna gave birth to Miller's baby boy in February (13) and the athlete is currently seeking shared custody of the tot.

Now Miller, whose wife Morgan Beck suffered a miscarriage in January (13), is asking a U.S. judge to force MCKenna to move to San Diego, where he resides, and issue a court order stating she needs written consent to take their son out of California.

The gold medallist, who also has a four-year-old daughter with Chanel Johnson, is additionally requesting that the child's last name be changed to Miller, according to Tmz.com.