Stephen Kunken as Ari Spyros and Kelly AuCoin as "Dollar" Bill Stearn in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_996.R.JPG
Deontay Wilder as himself, Stephen Kunken as Ari Spyros and Kelly AuCoin as "Dollar" Bill Stearn in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_98.R.JPG
Kelly AuCoin as "Dollar" Bill Stearn and Dan Soder as Mafee in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_968.R.JPG
Stephen Kunken as Ari Spyros, Deontay Wilder as himself and Kelly AuCoin as "Dollar" Bill Stearn in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_952
Kelly AuCoin as "Dollar" Bill Stearn and Dan Soder as Mafee in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_939.R.JPG
Dan Soder as Mafee and Kelly AuCoin as "Dollar" Bill Stearn in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_916.R.JPG
Dan Soder as Mafee and Tim Ferriss as himself in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_873.R.JPG
Damian Lewis as Bobby "Axe" Axelrod and Asia Kate Dillon as Taylor in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_810.R.JPG
Damian Lewis as Bobby "Axe" Axelrod and Asia Kate Dillon as Taylor in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_776.R.JPG
Damian Lewis as Bobby "Axe" Axelrod in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_757.R.JPG
Damian Lewis as Bobby "Axe" Axelrod and Jim Chanos as himself in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_711.R.JPG
Samantha Mathis as Sara Hammon and David Costabile as Mike "Wags" Wagner in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_553.R.JPG
David Costabile as Mike "Wags" Wagner, Jack Gilpin as Sean Ayles and Samantha Mathis as Sara Hammon in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_516.R.JPG
Deontay Wilder as himself, Jocko Willink as himself and Kelly AuCoin as "Dollar" Bill Stearn in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_453.R.JPG
Deontay Wilder as himself and Kelly AuCoin as "Dollar" Bill Stearn in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_381.R.JPG
Deontay Wilder as himself, Kelly AuCoin as "Dollar" Bill Stearn and Jocko Willink as himself in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_326.R.JPG
Stipe Miocic as himself, Tim Ferriss as himself and Dan Soder as Mafee in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_197.R.JPG
Tim Ferriss as himself, Dan Soder as Mafee and Stipe Miocic as himself in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_181.R.JPG
Dan Soder as Mafee and Asia Kate Dillon as Taylor in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_165.R.JPG
Tim Ferriss as himself and Dan Soder as Mafee in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_150.R.JPG
Sarah Stiles as Bonnie Barella and Kelly AuCoin as "Dollar" Bill Stearn in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_1249.R.JPG
Kelly AuCoin as "Dollar" Bill Stearn and Damian Lewis as Bobby "Axe" Axelrod in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_124.R.JPG
Kelly AuCoin as "Dollar" Bill Stearn and Deontay Wilder as himself in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_105.R.JPG
Nina Arianda as Rebecca Cantu, Damian Lewis as Bobby "Axe" Axelrod and David Costabile as Mike "Wags" Wagner in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_1049.R.JPG
Samantha Mathis as Sara Hammon and Asia Kate Dillon as Taylor in BILLIONS (Season 4, Episode 08, "Fight Night"). - Photo: Jeff Neumann/SHOWTIME - Photo ID: BILLIONS_408_1033.R.JPG