The London Olympics bronze medallist Saina beat Tan 21-15 21-17 in just 36 minutes of action. This was the first time the two were facing each other.
Saina, who claimed the Indonesia Masters last year has struggled since making a series of early exits in the rest of the year.
Earlier, Praneeth made a first round exit after going down tamely to Denmark’s Rasmus Gemke 11-21 15-21.
Srikanth lost to second seed Chinese Taipei’s Chou Tien Chen 17-21 5-21 in only 30 minutes.