Carlton vice-captain Sam Walsh has conceded Blues players struggle to think clearly when opponents surge, as the club searches for solutions to their second-half meltdowns. Walsh was emphatic the Blues’ fadeouts were not due to fitness, revealed that under-pressure coach Michael Voss gave players the floor in his post-match and challenged senior players to be mentally strong when rivals dial up the pressure. Voss is under the pump to keep his job after a torturous start to the season, in which the Blues have continued their habit of flaming out after half-time. The Blues’ capitulation against Melbourne, after leading by as much as 43 points, was the eighth time from 18 games they have lost after leading at the long break since the start of last season. No other club has given up more games when in front at half-time. Reflecting the Blues’ split personality, they are world beaters in the first half and easybeats from then on – their points differential dropping from +66 to -237.…