Only 42 goalies in @NHL history have started more than 10 games in season age 20 or younger.

Of those 42 goalies (52 seasons) NO-ONE had better sv% than @NHLFlyers Hart's current .922.

Ofc not all eras are equal, sv% averages change... but still immensely impressive.#Flyers pic.twitter.com/HJUqCnZQQr

— Alexander Appleyard (@avappleyard) January 29, 2019