Tucker won her first gold at the match in women's 10m air rifle, following that up with a gold medal in the air rifle mixed team event, competing with U.S. teammate Ryan Kissell.
IOC officials and Tokyo organizers are at odds over who will pay the bill for additional expenses involved with postponing the Games.
The postponement could cost a staggering $6 billion. Both the Japanese Government and the IOC would share the bill.
Tokyo Olympics Organizers announce new dates for 2021 Summer Games.