Sisters Serena and Venus Williams will collide at Indian Wells after they were both successful on Saturday night.
Serena won 7-6 7-5 against Kiki Bertens before Venus won 6-3 6-4 against Sorana Cirstea to tee up a third-round clash.
That will be their earliest meeting at a tournament since the first match they ever played - a second-round tie at the 1998 Australian Open.
Serena's first-round win earlier this week was her first victory since a 14-month absence after giving birth. She leads her elder sister 17-11 in all-time meetings.
Elsewhere, US Open finalist Madison Keys was eliminated by wildcard Danielle Collins, the world No 116.
You can watch the Masters 1000 from Indian Wells with coverage getting underway from 7pm on Sky Sports Action and via the red button on the same channel this Thursday. You can also watch it from 10.30pm on Sky Sports Main Event.
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