Vladimir Guerrero, Jr. set a Major League record with his 48 home runs this season.

Guerrero's Hall of Fame father's career-high was 44 long balls.

The Toronto Blue Jays slugger now holds the record for home runs in a season for a player age 22 or younger.

Guerrero surpassed Eddie Matthews, who hit 47 home runs in 1953 in his age-22 season.