Thanks. I only actually need the game logs and I'll eventually want to integrate college and international into the model.

Undisciplined

I've built a similar model for NCAA basketball, and it looks like professional basketball data is available: 

https://www.basketball-reference.com/

The basic data can be scraped from the tables for free. Deeper information might be behind a paywall, but I think you could create a basic model from the data that is freely available.

Stacker_Sports

Degenerate Corner 860789

Neat. I've been wanting to do something similar to this for basketball (and eventually baseball, hockey, soccer, etc.). 

Was the data fairly accessible?

I didn't get very far in looking into it, but it seemed like the gamelogs were behind a paywall.