A statewide recount has occurred 4 previous times and has never resulted in a reversal of the results. Casey is down 26k votes and is extremely unlikely to make up that in a recount. He still has yet to concede.
https://www.foxnews.com/politics/pennsylvania-senate-race-triggers-recount-mccormick-projected-win-casey-yet-concede
https://www.foxnews.com/politics/pennsylvania-senate-race-triggers-recount-mccormick-projected-win-casey-yet-concede