|Big Brother 9|
|Season Run:||June 30 - July 1st, 2018|
|No. of Days:||80|
|No. of HouseGuests:||16|
|Previous Season:||Big Brother 8|
|Next Season:||Big Brother All Stars|
Big Brother 9 is the 9th overall season of Mateo's Big Brother Series.
- Three Nominees: For the first six weeks of the game, there will be three nominees on the block via the MVP twist.
- Most Valuable Player: The MVP is an individual, voted on by viewers, who is playing the best game each week. Before the season premiere, viewers voted for the first week's MVP based on preseason interviews to determine who wins the very first MVP of the season before the first episode. The winner holds the power to nominate a third nominee. However, during the 5th and 6th weeks then America would become the MVP and decide who they want to nominate.
- Juror Comebacks: For the first time in the series, the first four jurors competed against each another in a competition; the winner got to re-enter the house.
Voting History Edit
|Week 1||Week 2||Week 3||Week 4||Week 5||Week 6||Week 7||Week 8||Week 9||Week 10||Week 11|
|Day 28||Day 31||Day 42||Day 49||Day 63||Day 70||Day 74||Day 77||Day 80||Finale|
|Hunter||Austin||Vicki||MVP||Brian||Timothy||MVP|| || ||Mateo|
|Timothy||Austin||Tiffany||Brian||MVP Rep|| |
|Key:||Nominated||Rep: Replacement Nominee||POV Holder||HOH||MVP||Jury Member||Evicted|
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