Who is this 'Mattress Mack,' and why does he do what he does

Famed Sports Gambler Jim McIngvale Is Against Legalized Sports Gambling

Mattress Mack: The untold story of Houston's own Jim McIngvale

Jim 'Mattress Mack' McIngvale says first pitch at Astros game canceled due to interference from national competitor

Mattress Mack betting $1.5 million on Epicenter minutes before Derby

Mattress Mack' On How His Outrageous Sports Bets Built A $240 Million Empire

Mattress Mack to receive $35.6 million payout if Houston Astros win the 2021 World Series

How Mattress Mack Pays For His Sports-Related Mega Giveaways

Mattress Mack Uses Wheelbarrow To Transport $10 Million In Cash

Here's how much money Mattress Mack is about to lose on the Houston Astros

You could say Mattress Mack had a pretty good night. : r/mlb