Josh Macleod returned from injury to captain Scarlets at Ospreys
Scarlets boss Nigel Davies was left frustrated by an "unheard of" difference of penalties between the sides in their derby defeat by Ospreys.
The Llanelli club suffered a 27-20 loss in the United Rugby Championship fixture in Bridgend after Jac Morgan's 75th-minute try.
Ospreys led 17-5 at the break but Scarlets – who had centre Joe Roberts and prop Kemsley Mathias sin-binned in the first half – came storming back to lead 20-17 going into the closing stages before late anguish.
Interim director of rugby Davies was angry at referee Ben Connor and his officials penalising his side 21 times and giving just four against Ospreys.
