Out of form Australian wicketkeeper Brad Haddin has admitted that he is suffering both mentally and physically due to the increased pressure on him to keep his Test spot.

Haddin also said he felt sluggish during the warm up before the Sydney Sixers exciting Twenty20 Big Bash win over the Perth Scorchers at the SCG last night. Haddin once again failed in this match and got out without scoring a run.

"I felt mentally and physically drained. It didn't feel right during the warm-up. How I felt, I just thought, Oh no, this doesn't look good," Haddin told Big Sports Breakfast on Sky Sports Radio.

 "I thought in Perth things were going well. I spent a lot of time catching leading into Perth and probably hit too many balls. You've just got to find that right balance," he adds.

Haddin also denied the notion that if the incessant discussions regarding his poor form cease, then he might feel better, The Daily Telegraph reports.

"What people underestimate are the pressures you're under whether you're doing well or not. It's a big effort to get yourself up for a four-Test series and I think that was the case last night," he added.

Haddin's poor batting form along with some sloppy glove work has prompted calls from to drop him in favour of Victorian keeper Matt Wade.