The fourth-seeded Safina was leading France's Camille Pin 6-3, 2-2 on Monday when their match was suspended because of rain. If Safina can hold on Tuesday, she would meet Krajicek in a rematch in the second round.
In other Monday action involving seeds, German Tatjana Malek upset No. 6 Slovenian Katarina Srebotnik 6-3, 6-2, Russian Elena Vesnina beat No. 7 Spaniard Anabel Medina Garrigues 7-6 (7-4), 3-6, 6-3, and No. 8 Ukrainian Alona Bondarenko crushed Dutch wild card Arantxa Rus 6-1, 6-1.
'How to Train Your Dragon 2' releases 5-minute clip
Lytro unveils camera that can focus a photo after shooting it