Head coach Paul Rowley says Leigh Centurions' second-half slide against Hull KR shows the level of concentration and quality they need to sustain to compete in the Qualifiers.
Championship winners Leigh looked set to make a winning start to the Super 8s when they led 24-6 at half-time.
However five Rovers tries ended their 32-game home win run in a 36-26 loss.
"It's a step up for us, we need to get a bit wiser, and bit better," Rowley told the BBC Super League Show.
"While the first-half was excellent we were disappointed to go in at half-time with that score-line.
"We should have taken more of our chances, maybe then it would have been too much for Hull KR and we'd have had two points on the ladder."
Despite conceding the opening try, Leigh's sparkling play with ball in hand gave Rovers real problems in the first period, notably with the offloading game.
Rovers' quick-fire try through Kieran Dixon after the break proved the catalyst for the turnaround in the game.
"We stopped defending tough down at their end," Rowley added.
"Everyone knows Hull KR come out very well with their back five, and we needed to be very good defensively.
"We needed enthusiasm and energy and toughness and we didn't do that and compounded that with a poor kicking game.
"When you play calibre of opposition like Hull KR they will punish you and territory is key, those two attributes enable Hull KR to get territory."