SportDraft
Cardinals’ Baez sets MLB record with three home runs in debut
St Louis’ 23-year-old drives in five runs as Cardinals defeat Chicago Cubs 8-4 at Wrigley Field
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Event
Cardinals rookie Joshua Báez hits three home runs in MLB debut
St Louis Cardinals rookie left fielder Joshua Baez became the first player in Major League Baseball history to hit three home runs in his first three at-bats during his debut on Saturday. Baez led the Cardinals to an 8-4 victory over the Chicago Cubs at Wrigley Field, driving in five runs. The 23-year-old hit all three home runs off Cubs starter Matthew Boyd, including a 449-foot shot in the first inning.
2 published stories · joshua-baez · source reliability 67%
Background
Why this event matters
St Louis Cardinals rookie left fielder Joshua Baez made history on Saturday by becoming the first player in Major League Baseball to hit three home runs in his first three at-bats during his major league debut. The 23-year-old drove in five runs to lead the Cardinals to an 8-4 victory over the Chicago Cubs at Wrigley Field. Baez, who entered the game ranked as the fourth-best prospect in the Cardinals system, hit all three home runs off Cubs starter Matthew Boyd, including a 449-foot shot in the first inning. His performance follows a dominant Triple-A season where he led the league with 34 home runs.
event-brief
Cardinals rookie Joshua Báez hits three home runs in MLB debut
St Louis Cardinals rookie left fielder Joshua Baez made history on Saturday by becoming the first player in Major League Baseball to hit three home runs in his first three at-bats during his major league debut. The 23-year-old drove in five runs to lead the Cardinals to an 8-4 vi
Reporting trail
ESPN | https://www.espn.com/mlb/story/_/id/49621644/cardinals-rookie-joshua-baez-makes-history-3-hrs-debut | published 2026-08-15T22:34:46.000Z | primary sourceCBS Sports | https://www.cbssports.com/mlb/news/joshua-baez-cardinals-mlb-history-home-run | published 2026-08-15T20:28:58.000Z | primary source
Fact cards
entity brief
Cardinals rookie Joshua Báez hits three home runs in MLB debut: key people and institutions
Key entities: Joshua Baez, St Louis Cardinals, Chicago Cubs, MLB, Matthew Boyd, Wrigley Field, ESPN, Triple-A Memphis.
source brief
Cardinals rookie Joshua Báez hits three home runs in MLB debut: reporting sources
ESPN | https://www.espn.com/mlb/story/_/id/49621644/cardinals-rookie-joshua-baez-makes-history-3-hrs-debut | published 2026-08-15T22:34:46.000Z | primary source | CBS Sports | https://www.cbssports.com/mlb/news/joshua-baez-cardinals-mlb-history-home-run | published 2026-08-15T20:
timeline brief
Cardinals rookie Joshua Báez hits three home runs in MLB debut: timeline
2026-06: Baez hits four home runs in a single Triple-A Memphis game. 2026-08-15 (Saturday): Baez makes his MLB debut against the Chicago Cubs at Wrigley Field. 2026-08-15 (First inning): Baez hits a 449-foot two-run home run off Matthew Boyd on the first pitch he sees. 2026-08-15
Timeline
2026-06
Baez hits four home runs in a single Triple-A Memphis game.
2026-08-15 (Saturday)
Baez makes his MLB debut against the Chicago Cubs at Wrigley Field.
2026-08-15 (First inning)
Baez hits a 449-foot two-run home run off Matthew Boyd on the first pitch he sees.
2026-08-15 (Subsequent at-bats)
Baez hits two additional home runs off Boyd, completing the historic feat.
2026-08-15 (Final)
Cardinals defeat Cubs 8-4; Baez drives in five runs.