Upgrade edition from base to deluxe?

[Andski]

I received the base game as a Steam gift last month but I’d like to upgrade to play early. Is there any way to do it? From Steam?

On the game page I see “Top Spin is in your library” but I still have option to purchase regular edition ($59.99) and Deluxe ($99.99). I was hoping for an option to upgrade to Deluxe for $40

Please help!

[Zeokage]

Generally, 2K haven't given the upgrade option to their bundles. You'd have to send a ticket to 2K Support to confirm.

[Blackburn]

You can refound the game, and then buy deluxe or gs