After a promising start to his MLB career, 25-year-old has hit a rough patch in 2025. Struggling at the plate, he was batting just .182 with a .277 on-base percentage and a .303 slugging percentage, totaling only six extra-base hits. Unfortunately, his season has now been cut short due to a serious knee injury that will require surgery, sidelining him for the rest of the year. While there’s optimism about his eventual return, the Red Sox must now navigate the season without one of their key young talents.
A Miami native, who was viewed as Boston’s long-term solution at first base. However, both his current slump and this injury could disrupt those plans. Still, he has played an important role in Boston’s recent resurgence in the American League.

https://x.com/LowDaysBernard/status/1918488935761887428?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1918488935761887428%7Ctwgr%5E42410898e3579aa9e8525b1b7438f9e896fccd0b%7Ctwcon%5Es1_c10&ref_url=https%3A%2F%2Frayscoloredglasses.com%2Frays-gain-an-unfortunate-edge-with-loss-of-red-sox-first-baseman-to-injury-01jtnce4zh33
His standout season came as a rookie in 2023, when the left-handed hitter posted a .263 average, launched 24 home runs, and drove in 65 runs. That year, he finished third in AL Rookie of the Year voting, trailing only Tanner Bibee and the unanimous winner, Gunnar Henderson.
It’s unclear how well the former top prospect will rebound from this major injury, but there’s no doubt the Red Sox will miss his offensive upside. In the meantime, the team will explore internal solutions before possibly seeking help via trade or free agency.
https://x.com/randomdingers/status/1902344314971398233?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1902344314971398233%7Ctwgr%5E42410898e3579aa9e8525b1b7438f9e896fccd0b%7Ctwcon%5Es1_c10&ref_url=https%3A%2F%2Frayscoloredglasses.com%2Frays-gain-an-unfortunate-edge-with-loss-of-red-sox-first-baseman-to-injury-01jtnce4zh33
For now, Abraham Toro has been tapped to step in at first base. The 28-year-old Canadian is a reliable utility player who’s been in the league for seven seasons, primarily manning second and third base during his stints with the Astros and Mariners. He’s only played first base 15 times since 2019, but he’s expected to hold down the position unless Boston makes another move.
However, the offensive output at first base will take a hit. Toro owns a career batting average of .220 and has hit just eight home runs since 2023. Once a solid contributor with Houston, his production has declined in recent years.
https://x.com/tylermilliken_/status/1919901537603551343?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1919901537603551343%7Ctwgr%5E42410898e3579aa9e8525b1b7438f9e896fccd0b%7Ctwcon%5Es1_c10&ref_url=https%3A%2F%2Frayscoloredglasses.com%2Frays-gain-an-unfortunate-edge-with-loss-of-red-sox-first-baseman-to-injury-01jtnce4zh33
This situation opens the door for the Rays and the rest of the AL East to gain ground. The Red Sox are currently 2.5 games behind the division-leading Yankees and just one game ahead of both Tampa Bay and Toronto. Losing Casas could have a significant impact in what’s shaping up to be a tight division race.