Big Brother (US) Season 16 Episode 6

The 2nd set of Nominations for the season are revealed tonight and since there are currently 2 HoH's each one must select 2 houseguests for elimination. The 4 houseguests then must compete against each other as teams 2 against 2 in the 2nd ever “Battle of the Block” competition. The winning team of 2 then is exempt from eviction for the week. They also cause the HoH that nominated them for eviction to be dethroned as an HoH leaving only 1 HoH and then the dethroned HoH becomes eligible for eviction should 1 of the remaining nominees be taken off the block during the next Power of Veto ceremony.