What's the record for the biggest crowd at a baseball match?

This would be a good one to start with:

“Roy Campanella Night,” a dramatic and unforgettable tribute to his strength during the most challenging times, was held on May 7, 1959 before 93,103 fans, a major league record crowd, at the Los Angeles Memorial Coliseum. It is awe-inspiring to consider that a sell-out crowd, with more than 15,000 more turned away at the gates, showed up for former Brooklyn Dodger catcher Campanella, who had been paralyzed at 36 years old in a single-car accident in 1958, and never had the opportunity to play a game in Los Angeles.

https://www.walteromalley.com/en/features/roy-campanella-tribute/Introduction

Record crowds turn out for 1936 Olympics. Against the backdrop of Hitler's Germany, the largest crowd (estimated at 125,000) ever to see a baseball game watched two U.S. teams play an exhibition game at Olympic Stadium in Berlin.

baseballamerica.com/today/news/050511worldcupa.html no longer exists

104,400 at the 1956 Melbourne Olympics, USA Services team vs. Australian team.

[ mcg.org.au/content/document/00000206-src.pdf no longer exists ]

http://www.austadiums.com/sport/crowd_records.php

The actual attendance at the 1936 Berlin game was 92,565:

http://websites.sportstg.com/assoc_page.cgi?c=0-6035-0-0-0&sID=83926

The single game attendance record is now 115,300:

It was on March 29, 2008, at the Los Angeles Memorial Coliseum in a preseason game between the Los Angeles Dodgers and defending champions Boston Red Sox. The Boston Red Sox beat the Los Angeles Dodgers 7-4 in front of 115,300 fans in one of the most iconic stadiums in the world.

https://franchisesports.co.uk/highest-mlb-attendance-largest-mlb-crowds-all-time/
https://baseballhall.org/clicking-turnstiles