Dating all the way back to the NHL's expansion era in 1967-68, only two Boston keepers have led rookie goaltenders in wins at the end of a season. Andrew Raycroft did it back in 2003-04, almost a decade after Blaine Lacher did it 1994-95.
In 29 starts this season, Swayman has 17 wins. That has him on top of all rookies in the NHL, with a strong chance at leading them once the regular season ends.