The issue stems from a late promotion from Triple-A Las Vegas in September. Las Vegas was eliminated from the Pacific Coast League playoffs on September 7. The Mets waited to promote Tejada until September 10, and that left him with two years and 171 days of playing time. The Mets had promoted several players the previous day.
Another day of service time would have given Tejada three full years, thus potentially making him eligible for free agency after the 2016 season. As it stands, the earliest he can be eligible for free agency is after the 2017 season. He will, however, be arbitration-eligible this offseason as a Super Two player.
It is not uncommon for teams to time promotions based on service time considerations. Passan suggests, however, that they are not typically quite as obvious about it as the Mets were in Tejada's case.
If Tejada were to receive the extra day of service time, Passan writes, Charlie Furbush of the Mariners would become eligible for arbitration as a Super Two player. Super Two status is determined by a percentage of players with less than three years of service time, and Furbush would take Tejada's place among that group of players in such a scenario.
Tejada hit .202/.259/.260 in 227 plate appearances for the Mets last season. He currently appears to be in line to start at shortstop in 2014, although the Mets could pursue other shortstops in the offseason.