Rus won 6-1, 6-1 over Rebecca Peterson
in the quarterfinals of Monterrey on Friday.
The 29-year-old Dutchwoman caught fire here, needing just 62 minutes to stroll past her No. 45-ranked foe to reach her first semifinal of the year. Rus, ranked No. 76, surprisingly has a 1-0 record against semifinal foe Elina Svitolina
, but that lone match came way back in 2011.