She attended Rollins College in Florida, where she played varsity tennis, before competing on the international circuit through the 1950s and 1960s.

She twice won the singles title at the South African Championships and was runner-up once.

In 1958 she won the Italian Riviera Championships in Sanremo on clay against Mexico's Rosie Reyes.

In 1960 she won the Trofeo Conde de Godó (known today as the Barcelona Open) on clay against Pilar Barril.

Brewer-Segal had marriages to William Jefferson Brewer (1952) and South African tennis player Abe Segal (1957), which both ended in divorces.