"I may have a little extra money to throw into my I.R.A.," said Kevin Flink, who has shared season tickets with his sister-in-law for more than 30 years.
Eric Levine, a high school teacher who shares season tickets with a friend, has had to explain to his son why basketball is not on television.
He was hooked when the Islanders bounced back from a three-game deficit to stun Pittsburgh in the 1975 quarterfinals, and before long, he was sharing season tickets.
"I get to see people I only see eight times a year and hang out with them," said Corey Griffin, who shares season tickets with his father and who has seats in the upper bowl at the new stadium.
He said the strength of the resale market — StubHub, Ticketmaster's Ticket Exchange, and similar services — means that fans do not have to buy or share season tickets to get a good seat.
Frequently -- but not always -- things that share seasons also share complementary tastes.
Southern Cal shared last season's college football championship with L.S.U. and stayed at the top of the ranking this season.
In late July, he returned to the booth that he has shared since last season with Cory Provus.
At Stanford University, Jeffrey Nedrow played the trombone in the band and later shared Giants season tickets with a group of friends.
But McQuarters and other Giants say this defense is different, and that it will work — an attitude not shared late last season under Lewis.
