After all the Mets have been through this season, they woke up today to find themselves alone in first place in the NL East thanks to a 9-3 win Thursday that completed a sweep of the Nationals combined with a Dodger sweep of the Phillies. In the notebook, Nolan Ryan has turned down the Mets’ invitation to attend their Shea Stadium send-off ceremony next month. There are also items on Billy Wagner, John Maine, Luis Castillo and Jerry Manuel’s reaction to instant replay.