Urawa Red Diamonds match help

Hey,I will be traveling japan this summer with friends and we would love to go see a J-league match. The match tht would suit best is the Urawa Red Diamonds v F.C.Tokyo on the Saturday 5th of July at the Saitama Stadium. How do we get tickets and how long in advanced would we have to get them.Is it possible to turn up the day at the stadium and get tickets??or is it even possible to get tickets from the 7/11 stores outside Tokyo as we will be traveling before. Thank you David.

Familymart conbinisotre sells tickets 2days before the game if there's any left. Don't go to stadum without tickets because there mightn't be any more ticket to sell and you'll ended up being miserable.

Do you think if we arrive the day before the match in tokyo, we will get tickets okay?? Is there any familymarts outside of saitama that sell the tickets?? because we will be traveling before tokyo and want to get them as quick as possible.thank you

Familymart franchise nationwide so no problem finding the store wherever you're travelling. Just ask locals where the nearest Famima is. Each Familymart store has a Famiport ATM machine that allows you to purchase REDs tickets.
You should do this quick after your arrival.