International fullback Liam Williams has been named in the starting XV in what will be only his second game of the season for the Scarlets, previously playing 60 minutes against Connacht at the Sportsground in January.
Steve Shingler will join him in the starting XV having made a return from knee injury and has been given the nod to start in the ten jersey.
Looking ahead to Saturday afternoon's game Pivac said; "We have a lot of respect for Gregor Twonsend and his side. They're the form team at the moment. They've won a run of games but they're also putting teams away and scoring tries.
"I think we have to make sure that defensively we're up to the challenge and line speed will play its part.
"They're looking like definite contenders and top four material. It's going to be a big challenge but we owe our crowd and we owe ourselves a big performance after our last outing."
Scarlets team to take on Glasgow Warriors, at Parc y Scarlets, Saturday 16th April kick-off 3.15pm;
15 Liam Williams, 14 Steff Evans, 13 Gareth Owen, 12 Hadleigh Parkes, 11 DTH van der Merwe, 10 Steve Shingler, 9 Gareth Davies, 1 Rob Evans, 2 Ken Owens ©, 3 Samson Lee, 4 Jake Ball, 5 David Bulbring, 6 Maselino Paulino, 7 James Davies, 8 John Barclay
Replacements; Kirby Myhill, Phil John, Peter Edwards, George Earle, Morgan Allen, Aled Davies, Aled Thomas, Steff Hughes
Unavailable for selection; Scott Williams (knee), Emyr Phillips (knee), Tom Williams (shoulder), Aaron Shingler (concussion)
Scarlets welcome Glasgow Warriors to Parc y Scarlets on Saturday 16th April, kick-off 3.15pm. Tickets are available now from tickets.scarlets.wales or by calling 0871 871 8088 open until 6.45pm this evening and from 9am tomorrow.
Guinness PRO12 Scarlets News
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