Table:
text: Jon Murphy (fighter)
Mixed martial arts record
Mixed martial arts record
Res_ Record Opponent Method_ Event Round Time_ Location_
Win 4-0 Sherman Pendergarst KO (punches) Extreme Challenge 75 1 2:16 New Jersey , United States
Win 3-0 Carlos Cline Submission (kneebar) CITC: Evolutions 3 1:13 New Jersey , United States
Win 2-0 Jerome Smith TKO (referee stoppage) CITC 3 - Marked Territory 2 1:20 New Jersey , United States
Win 1-0 Shaun Coffman KO ICE 7 1 1:45 Ohio , United States

Question: How many rounds was the fight when the record was 4-0 for Jon Murphy (fighter)?