The Midnight Delivery by Lawrence Hall

The only way to win is to risk losing it all.
Damian Wolf is the best underground fighter in the world. Nicknamed the “Hunter,” he has unparalleled skills and a reputation for putting men in the hospital. He’s undefeated and is also my brother’s next opponent.
And if my brother loses this fight, the Mafia will kill us both.
To win, I have to become the hunter. With Damian as my prey, I need to find a way to beat the unbeatable. This would be so much easier if Damian wasn’t so hot.
I can’t afford to let my heart get involved in this dangerous game. When the stakes are this high, losing is not an option.