Andreas Katzourakis went deeper than ever before to earn his latest knockout—and some extra cash on top of his paycheck.

The unbeaten Greek junior middleweight overcame an early flash knockdown to overwhelm Raphael Igbokwe en route to an eighth-round stoppage. A barrage of punches by Katzourakis forced referee Malik Waleed to stop the bout at 2:15 of round eight in their DAZN-aired co-feature Friday evening at Overtime Elite Arena in Atlanta, Georgia.

Katzourakis entered the fight confident that he would collect the OTX-offered knockout bonus. It was Igbokwe who struck first, however, as a pair of left hand sent Katzourakis to the canvas roughly 30 seconds into the contest. The Los Angeles-based prospect—who fought at middleweight as a one-off just to accommodate Igbokwe—smiled as he rose to his feet and rode out a subsequent volley by Igbokwe to seize control before the end of the round.

Igbokwe avoided a knockdown call late in round one when he sold referee Malik Waleed on a low blow. The damage appeared to come from a straight right hand just above the beltline but was ruled low.

Katzourakis still used the sequence as a momentum swing as he quickly seized control of the fight. Igbokwe was never able to recapture the magic enjoyed early in the fight as he was outgunned and consistently beaten to the punch for the balance of the fight. Katzourakis walked down the Houston-based boxer in rounds two and three and landed with straight right hands as he kept Igbokwe pinned against the ropes.

A right hand by Katzourakis rocked Igbokwe early in round five. A follow-up volley by the 25-year-old proved detrimental as he appeared to have punched himself out. Igbokwe was able to land a few left hands late in the frame though just enough to back off Katzourakis.

Igbokwe enjoyed pockets of success in rounds six and seven after he ran out of ring space and was forced to fight back. Katzourakis continued to serve as the aggressor even after he at a straight left hand and rocked Igbokwe with an uppercut late in round seven. Igbokwe once again found his back pinned against the ropes but Katzourakis was unable to land anything of consequence.

That changed in a big way in the eighth and final round.

Katzourakis was determined to leave Atlanta with a knockout bonus and earned the supplemental check with less than a minute to go in the contest. Igbokwe was badly rocked as Katzourakis continued on the attack until Waleed had no choice but to stop the contest.

Katzourakis remained unbeaten and extended his current four-fight knockout streak as his record moved to 11-0 (9KOs). Igbokwe suffered his third straight defeat as he fell to 16-5 (7KOs).

Headlining the show, former amateur standout Lorenzo ‘Truck’ Simpson faces Vladimir Hernandez in a scheduled ten-round middleweight contest.

Jake Donovan is a senior writer for Twitter: @JakeNDaBox