When homegrown goalkeeper Matthew Freese made his surprise debut off the bench on Saturday against the Montreal Impact to replace Andre Blake he became just the 27th rookie to make an appearance so far this season.
Rookie as defined by MLS at least, which means a first-year pro.
Like Anthony Fontana last year, 18-year-old midfielder Brenden Aaronson lost his rookie status after he signed a pro contract in September and played for Bethlehem Steel.
The league released its list of 2019 rookies earlier this week and it includes just 68 names. More than half of the players on the list have yet to see the field.