Because people will bet on anything,
5 different online casinos have odds for who will eventually get cast as Batman.
Betway
• Jake Gyllenhaal 100/30
• Oscar Isaac 4/1
• Michael B. Jordan 5/1
• Armie Hammer 11/2
• Kit Harrington 8/1
• Jon Hamm 10/1
• Liam Hemsworth 20/1
• Richard Madden 20/1
• Jack O’Connell 33/1
• Riz Ahmed 50/1
SkyBet
• Jake Gyllenhaal 3/1
• Oscar Isaac 4/1
• Armie Hammer 5/1
• Michael B. Jordan 11/2
• Kit Harrington 7/1
• Fionn Whitehead 10/1
• Jon Hamm 12/1
• Liam Hemsworth 16/1
• Richard Madden 20/1
• James Franco, Timothee Chalamet 33/1
BoyleSports
• Armie Hammer 7/2
• Jake Gyllenhaal 11/2
• Jon Hamm 13/2
• Michael B. Jordan 8/1
• Ben Barnes 8/1
• John Krasinski 9/1
• Jamie Dornan 10/1
• Josh Brolin, Matthew Goode, Chris Pratt, Michael Fassbender, Chris Pine 16/1
Ladbrokes
• Jake Gyllenhaal 3/1
• Kit Harington 4/1
• Jon Hamm 6/1
• Michael B. Jordan 7/1
• Timothee Chalamet 9/1
• Armie Hammer 9/1
• Sterling K. Brown 9/1
• Richard Madden 9/1
• Milo Ventimiglia 12/1
• Oscar Isaac – 16/1
MyBookie
• Kit Harington +165
• Jon Hamm +200
• Riz Ahmed +300
• Ryan Gosling +350
• Joseph Gordon-Levitt +400
• Scott Adkins +450
• Jeffrey Dean Morgan +650
• Jake Gyllenhaal +700
• Armie Hammer +800
• Ben Barnes +1000
Jake Gyllenhaal seems to be the betting favorite so far.