That day's 5 records, resolved. True ones carry their source line; made up ones are owned up to.
8 touchdownsA quarterback once threw 8 touchdown passes in one game.MADE UP
We made this one up. Checked against: ESPN and Guinness World Records. Both list the single-game record as 7 touchdown passes, first by Sid Luckman in 1943 and most recently by Drew Brees in 2015.
40 homersOhtani hit 40 homers and stole 40 bases in 126 games.TRUE
Source: Sportsnet. The Associated Press report on Sportsnet says Ohtani was the fastest ever to 40 homers and 40 steals in a season, needing just 126 games, and the first player to reach 50 and 50. Read the full record
50 goalsGretzky scored 50 goals in just 39 games.TRUE
Source: NHL.com. The NHL.com This Date in History page for Dec. 30 tells the 45 goals in 38 games, then five in game 39 story. Read the full record
15 three-pointersAn NBA player once made 15 three-pointers in a single game.MADE UP
We made this one up. Checked against: StatMuse. StatMuse single-game three-point leaders top out at 14, by Klay Thompson on Oct 29, 2018.
5 goalsSalenko scored five goals in one World Cup game.TRUE
Source: UEFA.com. The UEFA.com Salenko page says he holds the record for most goals in a World Cup match, with five against Cameroon in 1994. Read the full record