Aaron Judge made history yet again in the Yankees' 11-3 win over the Royals on Monday, homering twice at Yankee Stadium to tie and then break Mark McGwire's rookie record of 49 home runs in a season.
While breaking the rookie home run record is a major landmark, Judge's 2017 season has been incredible in so many other ways. The 25-year-old has made his way into the record books of rookie history, the Yankees and Major League Baseball.
Here are some facts and figures to know about Judge's unprecedented march to 50:
• Judge becomes the fifth Yankees player in history to 50 home runs, joining Babe Ruth (1920, 1921, 1927, 1928), Mickey Mantle (1956, 1961), Roger Maris (1961) and Alex Rodriguez (2007).
• At 25 years and 152 days old, Judge is the seventh-youngest player to hit 50 home runs in a season. The only players younger: Prince Fielder (23), Willie Mays (24), Jimmie Foxx (24), Mantle (24), Ralph Kiner (24), Rodriguez (25 years, 49 days).
• With Judge at 50 homers and the Marlins' Giancarlo Stanton at 57, this season marks the first since 2007 the American League and National League each had a 50-home run hitter (Brewers' Fielder and Yankees' Rodriguez).
• Judge joins Fielder (2007), Jim Thome (2002), Rodriguez (2002), McGwire (1999), Ken Griffey Jr. (1998), Mantle (1961), and Foxx (1938) as the only players to hit both their 49th and 50th homer in the same game.
• Judge is the seventh Yankees player in history with seven or more multi-homer games in a season, joining Ruth ('20, '27, '28), Lou Gehrig ('34), Mantle ('56, '61), Maris ('61), Jason Giambi ('05) and Rodriguez ('07).
• At the completion of Monday's game, Judge owns a .620 slugging percentage and a .418 on-base percentage with 124 runs scored and 120 walks to go along with his 50 round-trippers. The only players to hit all those numbers over a full season in the history of modern baseball are Ruth (four times), Foxx and Hank Greenberg in 1938, Mantle in 1961, McGwire in 1998 and Barry Bonds in 2001.
• Judge is on pace to be the third rookie ever to post an OBP above .400 and a SLG above .600 in more than 500 plate appearances, joining Albert Pujols (2001) and Ted Williams (1939). Judge is also the third rookie to score 120 runs and drive in 100 more. The only other two to do it are Williams and Joe DiMaggio (1936).
• Additionally, Judge is on pace to become only the sixth player in modern history to combine 50 homers with at least 120 walks and an OBP above .400. The five others: Ruth (again four times), Mantle in 1961, McGwire in 1998-99, Bonds in 2001 and Thome in 2002.
• Judge's two-homer day upped his career home run total to 54, which ranks as the third-most by any player on record over his first 177 career games behind Rudy York (57) and McGwire (55). Teammate Gary Sanchez, who went back-to-back after Judge's second blast Monday with a solo homer of his own, is right behind Judge with 53 over his first 177 big league contests.
• Judge's 54 career home runs already rank third in history among Fresno State alums, behind only Terry Pendleton (140) and Casey McGehee (67).
• With Judge at 50 homers and Sanchez at 33, the two have combined for the most homers among Yankees teammates since 1961, when Maris hit 61 and Mantle hit 54.
• Judge joins fellow rookie Matt Olson of the A's as two of only four players age 25 or younger in history to club at least 13 home runs in September. The other two were Troy Tulowitzki with 15 in September 2010, and Vladimir Guerrero in September 2000.
• With 203 strikeouts, Judge became the first player to hit 50 home runs and strike out at least 200 times in the same season. Baltimore's Chris Davis hit 53 home runs in 2013 and struck out 199 times, while the New York Giants' Johnny Mize only struck out 42 times while hitting 51 bombs in 1947 for the smallest mark.
• Judge's pair of home runs gave him 31 at home this year, which is tied for the 16th-most in a single season. It's the most for any player since Toronto's Jose Bautista launched 33 at Rogers Centre in 2010. The Yankees have six more home games to end the season, while Greenberg's 1938 record sits at 39.
• Judge set the world on fire in the first half of the season, blasting 30 home runs before the All-Star break. And yet, his September OPS (1.337), if it holds, would be his highest for any month this season.
• Judge hit the longest home run this season (495 feet) and has the four hardest-hit home runs at 121.1 mph (the hardest-hit ball of any kind this season), 119.4 mph, 118.6 mph and 118.4 mph.
Jack Baer is a reporter for MLB.com. Oliver Macklin is a reporter for MLB.com based in Washington, D.C. Follow him on Twitter at @OMacklinMLB. Matt Kelly, Ben Weinrib and David Adler contributed to this report. This story was not subject to the approval of Major League Baseball or its clubs.