[bLOCKQUOTE]Why exactly did the Mets call up prospect Khalil Lee for a single day when the team didn't even have a game? The reasoning went something like this: Due to an agreement with the Major League Baseball Players Association, teams must expand their rosters to the maximum of 28 players on Sept. 1. Adding players at that time is no longer optional. The Mets intended to use one of their extra spots on outfielder Albert Almora Jr. and the other on reliever Yennsy Díaz, who had been effective for them during previous callups. But because they optioned Díaz to Triple-A Syracuse on Aug. 23, he wasn't eligible for another call until Sept. 2. The Mets had to add someone in the interim. Their choices were either to recall reliever Geoff Hartlieb, whom they would have then demoted and had unavailable for 10 days, or Lee. So team officials contacted the rookie outfielder, telling him they planned to call him up for a single day. Lee received a day of big league pay without ever leaving Syracuse. Although Almora's presence makes Lee unlikely to see much of New York this month, he's put himself in the conversation for next year with a strong second half in the Minors, posting a .981 OPS for Syracuse in August.[/bLOCKQUOTE] https://www.mlb.com/mets/news/mets-add-brad-hand-to-active-rosterhttps://www.mlb.com/mets/news/mets-add-brad-hand-to-active-roster