Welcome! As as a fellow quilting newbie, I would suggest quilting a simple project first before tackling the sports quilt. Make a simple lap quilt or something. Pick a pattern (there are all kinds of beginner patterns available for free. Check out Jenny Doan of Missouri Star Quilt Company on YouTube). Pick a pattern that will work similarly as your sports quilt in the sense as, are you planning on doing quilt as you go blocks?, sashing?, stitch in the ditch?, etc... You want a chance to practice these techniques and work out any issues before working on the actual quilt. Do the thing in entirety, from cutting, piecing, basting, quilting to binding. You will learn tons from making it because you will make boo-boos at first. You'll definitely have a better idea on how the tackle the sports quilt and feel better prepared.
I just finished my first lap quilt and despite the mistakes I made I'm proud of it. I've learned so much and will definitely know better on my next one.
Best of luck and don't be afraid to ask questions! The community here is fantastic!