I'm in Iowa so you'd have to estimate from where you live, but the cheapest round trip flight I saw within a reasonable drive is $262 out of Minneapolis to LAX. That was flying in Friday and leaving Sunday.
2 day compact car rental from enterprise at the airport was $285.
Looks like your average motel room in a Quality Inn/Comfort Inn/Super 8 type room would be around $150/night in Pasadena.
Individual game tickets go onsale Wednesday and start at $165, so figure $200 after taxes and fees (it's California), and those are probably garbage seats. Budget more for better seats, my buddy went in 2015 and sat fairly high, he hated it. Those bleachers are at such a low angle that he felt like he was a quarter mile from the field.
Food, gas, drinks, walking around money...you probably don't want to take less than $500 each (remember, it's California).
So going as cheap as you possibly could it'd look something like this:
Flight - $262
1/2 Hotel - $150
1/2 rental car - $142
Game Ticket - $200
Food, Gas, Spending money - $500
Total - $1,254 per person