Chicago's Yura Movsisyan scored 4 goals, including 3 in 6 minutes, in Armenia's 6-2 win at Gibraltar. What's the most goals by an MLS player in a national team game? The player must have been on an MLS club at that time.
Here are the all-time stats for the USA national team: USA, Most goals,match, individual 4 (four times) Archie Stark, 11/8/25 vs. Canada Aldo “Buff” Donelli, 5/24/34 vs. Mexico * Joe-Max Moore, 12/5/93 vs. El Salvador Landon Donovan, 7/19/03 vs. Cuba Landon Donovan was playing for San Jose in the summer of 2003. 1993 was pre-MLS but, notably, Joe-Max Moore was not yet a professional player when he did it. The Donelli one back in 1934 was in a World Cup qualifier played in Rome the week before the 1934 Italy World Cup started. Donelli even missed a penalty kick in the game or he might have had 5.
I thought about MLS players who faced poor national teams. Outside of Concacaf, Joel Lindpere played for Estonia at Andorra on October 16, 2012, and Andorra was 201st in the FIFA Rankings then. Lindpere was on the Red Bulls then. He scored 19 goals in MLS with 5 of them in 2012.