Raonic, winner of a third straight San Jose title last month, will next face American Sam Querrey.
Querrey stands 2-1 in the series, but lost the last meeting in the San Jose semifinals.
"I think I just need to be a bit more consistent with the returns and play on my terms," Raonic said of Querrey. "He likes to play short points, he's a well-established player."
Raonic goes into what promises to be a big-hitting contest with an 11-4 record this season in his last event before Canada's Davis Cup quarter-final tie in Vancouver against Italy.
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