From Kazakhstan Encyclopedia
As of February 2013, her best performance at the Biathlon World Championships is 15th, as part of the 2012 Japanese women's relay team. Her best individual performance is 18th, in the 2012 individual and in the 2015 mass start.
As of January 2016, Tachizaki's best performance in the Biathlon World Cup is 11th, as part of the mixed relay team at Kontiolahti in 2011/12. Her best individual result is 10th, in the mass start Ruhpolding in 2015/16. Her best overall finish in the Biathlon World Cup is 33th, in 2015/16.