At Richmond, Ambrose was running in the top five of the Richmond 400. While racing Casey Mears mid-way into the race, Ambrose was bumped wide by Mears that lost Ambrose multiple positions. The two drivers confronted each other post race, which saw Ambrose land a punch into Mears' face after Mears was seen pushing Ambrose. Ambrose was fined $25,000 and Mears $15,000 for the altercation. Both drivers were placed on probation for one month. Despite the feud, both Casey and Marcos said they remain buddies and will "have a beer together" with Ambrose promising to buy.