Senior women's tennis player becomes first-ever Bruin to earn the honor twice in her career.
Fields joins 22 athletes to attend Phase 1 tryout by invitation in Edmonton.
UCLA shortstop hit .636 and hit three home runs in four UCLA victories last weekend.
The Bruins close out their non-conference home slate with the Pepperdine Waves on Tuesday.
No. 1-ranked UCLA (24-2) will take on UC San Diego (17-11) on Friday afternoon at Stanford.