The Mets, who haven't been to the playoffs since 2006, on Tuesday put postseason tickets on sale for some season-ticket holders.

Fans with season-ticket plans of 20 or more games were told they can purchase a "ticket strip" to a possible 11 home postseason games -- including an NL wild-card game, three NLDS games, four NLCS games and three World Series games. That's the maximum number the Mets can host this year.

Fans must respond to the offer and pay for the tickets by Aug. 31. Tickets range from $428 in the outfield promenade to $5,790 for Delta Platinum seats. Fans must buy tickets for all 11 games and will be reimbursed for games that are not played.

The Mets went into Tuesday night with a 1½-game lead over Washington in the NL East. They had a 65.1 percent chance to make the playoffs, according to the website Baseballprospectus.com, which also gave the Mets a 5.9 percent chance to win their first World Series since 1986.

Fans worried that the Mets might be jinxing their playoff chances should note the Royals, who hadn't made the postseason since 1985, last year put playoff tickets on sale on Aug. 14. The Royals made it all the way to Game 7 of the World Series.

The Mets also informed season-ticket holders that a full 81-game plan for 2016 will have a weighted average increase of 2.86 percent.

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Extra bases

Lucas Duda was not in the lineup because of a stiff back. Duda said he hoped to return Wednesday night . . . After the game, the Mets called up catcher Anthony Recker and sent Kevin Plawecki to Triple-A Las Vegas.