The Mets’ Opening Day roster and availability of certain ailing players is starting to take shape. After throwing a bullpen session this morning, Max Scherzer said he is most likely pitching the second game of the season on Friday, according to reporting from Anthony DiComo. Scherzer has been dealing with hamstring tightness of late and was scratched from his final spring start, but there does not appear to be a high level of concern regarding his readiness for his first start. With Jacob deGrom starting the season on the injured list, this means that Tylor Megill could potentially slot in as the Mets’ Opening Day starter on Thursday, but the weather in Washington DC this week may have something to say about that, so all of this comes with a level of uncertainty.