Won a silver medal with Team USA at the Tokyo 2020 Olympic Games, leading the team with five appearances in the tournament. He pitched a scoreless inning of relief in the Group B finale against Korea and struck out two batters, helping tie the U.S. record for team strikeouts in a game (14). McGough blew a save opportunity in a loss against Japan in the quarterfinals, giving up a run in the bottom of the ninth to force extra-innings, but worked around two hits to pitch a scoreless inning of relief against Dominican Republic (striking out two) to advance to the semis. He gave up three hits and a run in his 0.1 innings of work against Korea in the semifinals and surrendered an unearned run in the gold medal game against Japan.

McGough was a member of the 2010 Collegiate National Team, pitching in five games that summer and had a 0.82 ERA in 11.0 innings pitched.