Sydney Roosters coach Trent Robinson says he is unconcerned by his side's repetitive second-half struggles, after their last-minute 18-12 loss to Manly.
The Roosters are still yet to win a second half this season, despite going through their first four games unbeaten, before Friday's upset loss.
Their aggregate score is now a 56-40 record against in the second term, however they did walk out equal against Penrith and South Sydney in the final 40.
By comparison, their first-half record reads 74-22 in their favour.
But Robinson said Friday night's second stanza was far different to the four second-half efforts that had preceded it.