At WWE Backlash 2023 main event, The Beast Incarnate Brock Lesnar faced The American Nightmare Cody Rhodes in first time ever match, which was won by the Cody Rhodes. The blood spot occurred during the match, with Brock Lesnar seemingly blading his forehead moments before he was thrown at the exposed turnbuckle by his opponent Cody Rhodes.
According to a recent report from Dave Meltzer on F4Wonline, while the use of blood was permitted for the match, the way in which Brock Lesnar may have caused himself to bleed is not allowed by company higher-ups.
“The blood with Brock Lesnar vs. Cody Rhodes was attempted and not an accident. Lesnar is allowed to do that although blading, which is far safer then smashing your forehead hard into steel to get blood, is not allowed in WWE.” (H/T: PWMania)