During her first 1999—2000 World Cup season, Zaitseva only appeared in one race, didn't scoring for the overall standings.
Starting from the second half 2001—02 season, she became a regular in the Russian World Cup team.
The best result is the 4th place in the 2004—05 season and winning the mass start discipline cup of the same season.

*Key:Races—number of entered races/all races; Points—won World Cup points; Position—World Cup season ranking.

**2011–12 season in progress.
Statistics as of 15 January 2012.
During her first 1999—2000 World Cup season, Zaitseva only appeared in one race, didn't scoring for the overall standings. Starting from the second half 2001—02 season, she became a regular in the Russian World Cup team. The best result is the 4th place in the 2004—05 season and winning the mass start discipline cup of the same season.
*Key:Races—number of entered races/all races; Points—won World Cup points; Position—World Cup season ranking.
**2011–12 season in progress. Statistics as of 15 January 2012.
Olga Zaitseva