Table:
text: Jake O'Brien
Mixed martial arts record
Mixed martial arts record
Res_ Record Opponent Method_ Event Round
Win 10–0 Heath Herring Decision (unanimous) UFC Fight Night 8 3
Win 9–0 Josh Schockman Decision (unanimous) UFC 65 3
Win 8–0 Kristof Midoux TKO (referee stoppage) UFC Fight Night 6 2
Win 7–0 Pat Harmon TKO UFL – United Fight League 1
Win 6–0 Antoine Hayes TKO LOF – Legends of Fighting 6 1
Win 5–0 Jay White KO (punch) WEC 19 1
Win 4–0 Johnathan Ivey TKO LOF – Legends of Fighting 4 1
Win 3–0 Anthony Ferguson TKO LOF – Revolution 1
Win 2–0 Paul Bowers TKO IFC – Integrated Fighting Classic 3 1
Win 1–0 Chris Clark TKO (referee stoppage) MT – Madtown Throwdown 3 1

Question: Which method's opponent was Chris Clark under Jake O'Brien?