The 1939 FA Cup semi-final between Grimsby Town and Wolves carries on after the crowd had been on the pitch at Old Trafford.
“It’s hard to know what, in the year 2023, looks more far-fetched. That when Grimsby play Brighton on Sunday they will be attempting to reach the club’s third FA Cup semi-final, not the first; or that the previous runs to the last four, which included wins over Manchester City and Chelsea, had nothing to do with David or Goliath. Grimsby’s semi-final appearances in 1936 and 1939 were highlights of the greatest period in the club’s history. …”
Guardian