A doctor stopped a UFC bout when an American MMA fighter's eye swelled-up like a golf ball

• Justin Jaynes suffered a gruesome injury during a second-round UFC loss Saturday.
• Devonte Smith rained strikes onto Jaynes while they were on the floor.
• A doctor prevented Jaynes from continuing because a swelling was so severe it slammed one eye shut.

Justin Jaynes suffered a third successive MMA loss Saturday when a doctor prevented him from continuing a bout because a grotesque swelling slammed one of his eyes shut.

The bruising was so severe it grew to a golf ball's size and was discolored in vivid blue, red, and black.

Jaynes sustained the injury during his 160-pound catchweight match Saturday against Devonte Smith at the UFC Fight Night 184 event inside the UFC-owned Apex facility in Las Vegas.

Smith dominated the contest with wrestling and ground-and-pound.

When Jaynes was on the canvas, Smith's unrelenting attack of punches and elbows damaged Jaynes considerably.

Though Jaynes overcame an ineffective rear-naked choke attempt and was able to get the fight back to its feet, the referee requested a doctor intervene to check the fighter's eye.

As his vision was so impaired, he was deemed unfit to continue - much to his chagrin.

Defeat saw Jaynes' pro-MMA record retreat to 16 wins (eight knockouts, five submissions, two decisions, and one other) against seven losses.