01/14/1998 AT 12:00 AM EST

To Tour de France champion Lance Armstrong and his wife Kristin, the couple's first child, Luke David Armstrong, Tuesday, weighing in at more than 7 pounds. Baby and mother -- and dad -- are said to be fine. Mrs. Armstrong got pregnant using in vitro fertilization with sperm her husband stored in Oct. 1996, before starting chemotherapy for advanced testicular cancer.

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