You wear your love for your favorite sports team on your sleeveshirts and umbrellas with your team's logo your kids have the mascot instead of a Teddy bear. If you could, your house would be covered in team stuff, right down carpeting. Since you can't, choose your battles wisely. Show your team spirit outdoors with a team banner on your lawn.
Show Your Love
First thing's first: you can buy just any kind of sports pennant and stick it in your yard. Because these are outdoor items, look for pennants and banners that are made from durable fabrics. Waterproofing and a certain amount of wind resistant stiffness are required if you want your pennant to last longer than a single season. Pennants should also be machine washable whenever possible. It wouldn't do to show your team's logo covered in dirty and rainwaterproof one out in the elements.
Some pennants come with their own stands or hooks for outdoor decoration. This isn't always the case though, so buyer beware. You can use other lawn gear to show off your pennant, but be sure whatever you're using is properly mounted, otherwise it, and your pennant will blow away.
Teams
Like all sports gear, outdoor pennants can be found for teams in every sport, on nearly every level. College basketball and football, minor league baseball, it's all there. If you can buy tickets for it, you can probably buy merchandise for it, and that includes pennants. Major sports franchises are, of course, not left out here. You can find pennants of different sizes celebrating your favorite team, some with vintage logos or the years of important wins decorating them.