Glasgow’s players started their review of a disappointing performance on the pitch in Llanelli – it will not get any easier in the video and analysis room this week.

Crucial weaknesses were exposed at Parc y Scarlets, most notably in the scrums and at half back. This result takes the Scarlets close to finishing second in Conference B of the Guinness PRO14.

Glasgow will want to bounce back with a win against Connacht in Scotstoun on Friday to confirm top place in Conference A, all of which means a return match between these two teams is likely in the play-offs – but this time in Scotland.

“It’s going to be a harsh review. We need to look at ourselves, what we did in the week and where we can be better,” said back rower Callum Gibbins, who took over the captaincy after a rib injury to Ryan Wilson.

“After that performance our next game needs to be a win. We have six days to turn it around and address the mistakes we made. It’s disappointing, but it’s not worrying and I don’t think there’s any panic.”

This was a first game back since the Six Nations for six Scotland internationals and the performance was disjointed in all sorts of ways. They have three games to confirm top place and regain top form, so home advantage will be crucial.

“Scotstoun is great, it’s awesome to play there,” said Gibbins. “Hopefully we can get a win on Friday and get to play there again in a home semi-final. That would be the dream result.

“We’re aware the play-offs are coming, but personally I want to win every game I play.”

Glasgow were hampered by a series of scrum penalties which allowed the Scarlets to keep the scoreboard ticking over while denying Glasgow attacking platforms.

They also struggled for fluency at 9 and 10, Finn Russell taken off at half-time while Ali Price gifted opposite number Gareth Davies an interception try which sealed the result.

A Henry Pyrgos try, created by Peter Horne, will form a tiny part of the review.

Scorers: Scarlets: Pens – Halfpenny (3). Tries – Patchell (2), G Davies. Con – Halfpenny.

Glasgow Warriors: Pen – Horne. Try – Pyrgos.

Scarlets: L Halfpenny, I Nicholas, S Williams (D Jones 75), H Parkes (S Hughes 46), S Evans, R Patchell, G Davies (A Davies 65), R Evans (D Evans 77), K Owens (Capt, R Elias 72), S Lee (W Kruger 43), T Beirne (L Rawlins 75), S Cummins, A Shingler (W Boyde ), J Davies, J Barclay.

Glasgow Warriors:

S Hogg; T Seymour, N Grigg, S Johnson, DTH van der Merwe (L Masaga 72); F Russell (P Horne 40), A Price (H Pyrgos 60); J Bhatti (O Kebble 40-75), G Turner (G Stewart 3), Z Fagerson (S Halanukonuka 56), T Swinson), J Gray, R Harley (Chris Fusaro 60), C Gibbins, R Wilson, (Capt, S Cummings 65).