Fives, nines or elevens

• Giants and Titans
• Gridiron opponents
• Braves, Indians, and Chiefs
• Reds and Blues
• They play at home and away
• Competitors at Shea
• Groups of competitors
• Cubs and Bears, e.g
• Rams and Jets, e.g

Wiktionary Word definitions in Wiktionary
n. (plural of team English) vb. (en-third-person singular of: team )