Joshua Báez arrived at Wrigley Field as the St. Louis Cardinals' most hyped hitting prospect in years. By the end of the sixth inning Saturday afternoon, he had done something no Cardinal had done in a major league debut in decades: hit three home runs, including a 449-foot blast on the very first pitch he saw in the big leagues. With Báez powering the offense, the Cardinals led the Chicago Cubs 7-3 through six innings in a game that instantly became one of the defining moments of their season.
Joshua Báez Homers on the First Pitch of His MLB Career
The Cardinals promoted the 23-year-old outfielder from Triple-A Memphis before Saturday's game, and he wasted zero time making the decision look brilliant. Batting in the top of the first inning with a runner on base, Báez jumped all over a 93.4 mph fastball from Cubs left-hander Matthew Boyd and drove it 449 feet to dead center field at 108.6 mph off the bat. The two-run shot gave St. Louis a 3-0 lead before many fans had settled into their seats.
The home run made Báez the 11th player in Cardinals franchise history to homer in his first career at-bat, and just the fourth visiting player ever to do it at Wrigley Field. It was also the third-longest home run hit by a Cardinal all season, trailing only two towering shots from Jordan Walker. For a player who had spent the summer crushing baseballs at Triple-A, the opening statement could not have been more emphatic.
Báez Keeps Swinging: Solo Shot and a Third Bomb
The debut night was only getting started. After the Cubs answered with a three-run second inning on Michael Conforto's homer to knot the game at 3-3, Báez responded in the fourth with a solo shot to left field, turning on a 3-2 changeup and sending it 382 feet to put the Cardinals back in front. Then, with the game still tight in the sixth, he struck again — a two-run homer to right field that scored Alec Burleson and stretched the lead to 6-3 before Blaze Jordan added a 408-foot solo blast of his own.
Three home runs, five RBIs, and a 449-foot moonshot all before the seventh inning of his first big league game. It was the kind of performance that forces a franchise to rethink its lineup card immediately. Báez entered the game as MLB Pipeline's No. 3 prospect in the St. Louis system and the 59th-ranked prospect in baseball, and he showed exactly why the organization believes he can be a middle-of-the-order force for the next decade.
What Báez's Arrival Means for the Cardinals' Playoff Push
This is not a small sample of a hot prospect getting lucky. Báez has been the most productive hitter in all of Triple-A this season, slashing .256/.328/.573 with 34 home runs and 90 RBIs in 103 games for Memphis. He led every Triple-A batter in home runs and RBIs — no one else had more than 27 homers or 74 RBIs entering the weekend. Earlier this summer he even hit four home runs in a single game, pointing to the sky after each one.
The Cardinals, sitting at 61-61 and third in the NL Central, need exactly this kind of jolt. Their offense has struggled to find consistency all season, and the outfield has cycled through options without anyone claiming the job. Báez's debut is the strongest argument yet that the answer was in the system all along. Manager Oli Marmol now has a legitimate power threat to build the lineup around, and the timing could not be better with the club fighting to stay within reach of the playoff picture.
Cubs Strike Back, but Boyd and the Bullpen Can't Contain the Burst
The Cubs came into Saturday looking to make it two straight against their biggest rival, one day after Clay Holmes and three relievers combined on a three-hit shutout in a 3-0 Cubs win. Boyd, who entered with an 8-1 record and a 3.50 ERA, had won five of his last six decisions, but the Cardinals got to him early and never let him settle. St. Louis hitters worked counts, took advantage of free passes, and made Boyd pay for mistakes in the middle of the plate.
Conforto's three-run homer in the second inning briefly made it a ballgame, and the Cubs' offense threatened again in the middle innings before the Cardinals' bullpen steadied itself. But the story of the afternoon was the guy in the red jersey with the number on his back who had never played an inning in the majors before Saturday. Every time the Cubs pulled within striking distance, Báez answered — and the Wrigley crowd, even the partisan home fans, couldn't help but appreciate what they were watching.
The Series and What Comes Next
With the game still in progress, the Cardinals were positioned to even the three-game series at one game apiece and take a small piece of momentum into Sunday's finale. The Cubs, winners of six of the 11 meetings between the teams this season, still hold the season-series edge, but the balance of power in this rivalry has a new name on it after Saturday.
Báez will have plenty more at-bats to prove this debut was no fluke. But for one afternoon at Wrigley Field, the future of the St. Louis Cardinals arrived in spectacular fashion — one first-pitch fastball, one 449-foot moonshot, and two more home runs that had the entire baseball world talking about a name they'll be hearing for a long time.
Marcus Bennett
Marcus Bennett breaks down games with a focus on style, pace, momentum, and matchup factors that help readers better understand the betting board.