The Robins fell to a 1-0 defeat away to Burton Albion at the Pirelli Stadium.
A late goal from Victor Adeboyejo sealed the win for the Brewers, despite a big penalty save from Luke Southwood in the first half.
Ryan Jackson took the initiative early on for the Robins, firing a shot from range at the Burton goal with goalkeeper Ben Garratt level with the effort in the end.
The Brewers looked to get on the scoresheet as Adrian Mariappa headed his effort toward goal, with the ball heading over the crossbar.
Burton kept the pressure up as Adeboyejo was played through on goal before releasing a wayward effort, flying far away from Southwood’s goal.
Jackson found space out wide before whipping the ball towards Dan Nlundulu, his header went narrowly wide of the post.
Burton found themselves with a penalty just before half-time, a huge save from Southwood from Adeboyejoa kept the scores level.
Lewis Freestone put his body on the line to keep the scores level, throwing himself in front of a shot from Terry Taylor.
Burton would eventually take the lead as Jonny Smith played a ball in for Adeboyejo who tucked it home at the front post.
Robins – Southwood, Long (Williams 33), Raglan, Freestone, Sercombe, Nlundulu, Taylor, Jackson, Perry (Olayinka 74), Norton (Bonds 53), Broom (Brown 74)
Un-used substitutes – Macdonald, Adshead, Lloyd
Burton – Garratt, Brayford, Oshilaja, Hughes, Powell (Kamwa 67), Mariappa, Keillor-Dunn (Butcher 87), Onyango (Smith 67), Adeboyejo, Taylor, Hamer
Un-used substitutes – Sinisalo, Borthwick-Jackson, Thorpe, Lakin
Attendance -2,269
Referee – P Wright