AUSTIN, TX — Multiple witnesses at Southside Grappling Academy confirmed Wednesday that 34-year-old blue belt Derek Chambers appeared to deliberately time his partner selection, sitting out the first three rounds of live training before approaching visibly exhausted purple belt Marissa Chen with a request to “go light.”
Chen, who at the time of the request was bent at the waist with both hands on her knees, had just completed her third consecutive round — the final one against the gym’s competition-level black belt instructor.
“Let’s go light,” Chambers reportedly said, appearing at her elbow approximately four seconds after the buzzer. He was, by all accounts, completely dry.
A reconstruction of Chambers’ movements during the preceding 15 minutes, compiled from six eyewitness accounts, revealed the following:
During Round 1, Chambers rolled with a first-week white belt named Tyler for approximately 90 seconds before the white belt tapped to what he later described as “general overwhelm.” Chambers then spent the remaining three and a half minutes adjusting his belt near the water fountain.
During Round 2, Chambers got water. He then stood against the far wall with his arms crossed and surveyed the room. One witness described his expression as “a nature documentary, but from the lion’s perspective.”
During Round 3, Chambers stretched his hip flexors for two minutes, checked his phone, then began making slow, deliberate eye contact with Chen, who was at that moment being ground through a pressure passing sequence by a 215-pound black belt.
“He never rolls first round,” confirmed brown belt Jake Holloway, who says he has tracked Chambers’ behavioral pattern for eight months. “Not once. He watches. He waits. And when someone’s fully cooked, he walks over and says some version of ‘wanna get one in?’ Like he just arrived.”
Head instructor Marcus Ramos confirmed he has observed the behavior but noted that Chambers “isn’t technically breaking any rules.”
“There’s no regulation against energy management,” Ramos said, pausing for what felt like a long time. “Even if the energy management is mostly just patience and a complete absence of shame.”
Dr. Aimee Cho, a sports psychologist retained by The Porra to review the incident, categorized Chambers as a “classic energy arbitrageur.”
“He’s not lazy,” Dr. Cho said. “He’s optimized. He has identified that the most favorable effort-to-output ratio occurs approximately 12 to 15 minutes into live training, when the room’s most skilled practitioners are at their physical worst. It’s the same instinct that drives a vulture to circle instead of hunt.”
The Porra contacted four additional academies and found the behavior to be endemic. Every gym had at least one. Several had named theirs. Reported designations included “The Sniper,” “The Vulture,” “The Chicken Hawk,” and, at one Colorado Springs school, simply “Jeff.”
One 71-year-old practitioner at a South Florida gym offered what may be the most honest assessment of the phenomenon.
“I’m always tired,” he said. “So I don’t even notice.”
When asked to respond to the investigation, Chambers said he simply doesn’t like to rush into things.
“I’m just a relaxed roller,” he said, adjusting his pristine, bone-dry gi collar. “I don’t know why people make it weird.”
He then asked this reporter if she wanted to go light.