Hi Chris,

Hmmm ... those pesky possessives can be confusing. We use an apostrophe with a noun to show ownership.

For example: This is Alpha-bot's football.

We don't use an apostrophe with possessive adjectives such as my, your, his, her, our, their, its.

So no apostrophe in the second example: This is his football.

Hope this helps. Thanks for writing!

Grammarman