The Lucknow-based team, who had opened their campaign with a 4-3 win over defending champion Chennai Smashers in the PBL opener at Guwahati, continued their rampaging run, winning the first three matches -- including their Trump match -- to beat the North Easterns here.
World No 10 Saina, who clinched her 2010 Commonwealth Games gold medal at the same venue, continued her love affair at the Siri Fort Sports Complex with a 6-15 15-13 15-13 triumph over world No 21 Li, who is interestingly the reigning Commonwealth Games champion.
In the men's singles, Commonwealth Games champion Parupalli Kashyap then came out strongly against Ajay Jayaram, notching up a 15-9 15-12 win to give a 3-0 lead to Awadhe Warriors.
Saina then sealed the issue in favour of Awadhe after surviving a mighty scare against Li, who dished out a spirited game before going down narrowly.
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"I couldn't play the last three weeks due to an ankle injury. I didn't have much match practice but I am happy to win. She played well. I couldn't react as I am still sluggish. I need time to get full fitness," Saina said after the match.
Saina failed to negotiate a series of drop shots from Li early on as the Canadian simply walked away with the opening game without much ado.
The Indian, however, got her bearing right in the second and the duo were tied 4-4 at one stage. The Indian earned a slender 8-7 lead at the break after Li sent one to the nets.
Li showed great defence but a gritty Saina displayed her mettle as she roared back into the contest when her rival went wide after an exciting rally.
Saina left one at forecourt and hit long to hand over the lead to Li. A body smash saw Saina make it 13-13.
Another engrossing rally and Li's drop shot hit the net to give Saina the match point.
A fantastic rally ended with Li's shot going wide again as Saina exploded in celebration.
Earlier, Kashyap zoomed to 5-1 lead early on before grabbing a 8-3 advantage at the first interval. He continued to stay in the driver's seat even as Jayaram struggled to find his rhythm in the first game.
In the second game, Kashyap headed into the break with a four-point lead against Jayaram, who narrowed the margin to 10-12 at the closing moments. Kashyap, however, eventually closed out the match comfortably.