While chairman of selectors Andrew Hilditch phoned the 25-year-old New South Wales spinner to tell him he would not be going, and explained that Krejza's finger-spin might be better suited to Indian pitches, he apparently didn't explain why 36-year-old Bryce McGain was chosen ahead of Casson.
Casson was asked yesterday what specific reason Hilditch gave for his omission in preference for the Victorian, and responded: "Nothing glaringly out there."
Speaking for the first time since his axing, Casson admitted he was greatly disappointed but vowed to fight back.
"It's not news I wanted to hear. Naturally, I was very disappointed. Whenever you play cricket your dream is to play for Australia, and I'm no different. For me, it's an opportunity now to go away and look at my game and certain areas I need to improve on, but, look, I was disappointed - I'd be lying to say I wasn''t," the Sydney Morning Herald quoted Casson, as saying.
"The selectors have decided to go that way, they've selected a side they think is going to win them the Border-Gavaskar Trophy. I wish them well. It will be a great opportunity [for McGain] bowling on spinning wickets," he added.
Casson, who played his one and only Test in the West Indies in June, said he did not presume he would be picked and will now work on his delivery control with NSW for the coming domestic season - with one eye on returning to the national side for the home series against New Zealand and South Africa from November.
"No one has got a right to say they're going to play for Australia, I've played one game, I'm very, very lucky to do that. I'm going to be working very hard to get back in," the left-armer said.
"You can never be presumptuous that you're going to play for Australia. No one is a certainty. For me it's all about control, it's being able to be versatile and bowl in certain conditions … when I wake up, what can Beau Casson do today to try and improve myself as a cricketer? Whether on some pitches you bowl slower and other pitches you bowl quicker - variation. I''m 25. Hopefully, I've got a hell of a long time in the game still to come. I'm pretty happy with the way I went … I got a taste of it and I loved every second of it. I want to keep doing it. I want to play for Australia as often as possible," he added.