Liam Plunkett insists he will be fine to play after making a mammoth 40-hour journey to join up with England ahead of their final one-day international against Australia.
The Durham bowler was on tour with the England Lions in St Kitts in the Caribbean when the call came from Perth to join up with the full squad.
"It was actually my sleep-in day when I found out," he said.
"I was going to sleep until 10 o'clock and then go to the gym and then I got the call from (ECB performance director) Dave Parson that I was on the next flight out."
The emergency call up comes after the long tour in Australia severely depleted the England bowling attack.
And despite the round the world trip, Plunkett believes he will be rested and ready to take the field in the last game of the series, which England trail 5-1.
"I went from St Kitts to Miami and then Miami to Heathrow. I was there for 10 hours so I had a sleep there and then went to Singapore and here," Plunkett said.
"But I've been here two nights now. I've had plenty of time to rest and slept on the plane thanks to some sleeping tablets."
England's bowling crisis has left only three fit seamers to choose from with Jimmy Anderson as well as Chris Woakes and Steven Finn - who have both made their debuts in the series.
The injury list of bowlers includes Graeme Swann (knee/back), Tim Bresnan (calf), Ajmal Shahzad (hamstring) and Chris Tremlett (side) all of which have subsequently returned to England for treatment.
Plunkett would offer more experience to the bowling attack with 28 one-day internationals to his name - although his only appearance in the past three years was against Bangladesh in March last year.
The WACA will offer a fast pitch and the chance for England's pacemen to have an impact as the series draws to its close.
The 25-year-old has been rewarded with a call up after some good performances with the England Lions since arriving in the Caribbean last month.
"I was (surprised to get selected). But I've got the call up, I'm here and hopefully I will play," he said.
"I might be 12th man yet, but hopefully I'll play - I've got fresh legs. I feel strong and confident in my bowling so hopefully it goes well and we'll see what happens from there."