The Phils' 10-19 record over a full season would work out to 56 wins and 106 losses.
They still have the worst run differential in the league at -58, and using the pythagorean projection it translates into an expected 8-21 record, meaning they've been a bit lucky so far in winning 10 games, scary as that may be.
Extrapolated to the whole season, an 8-21 record would be 45-117. That would be the fourth highest number of losses in MLB history (tying the 1916 A's), behind only the 1962 Mets (40-120), and 2003 Tigers (43-119), and in the game's ancient history, the 1899 Cleveland Spiders (20-134).