Ryan Mountcastle, 2021
After he made his debut in the 2020 Covid season with a 35 game showing, Ryan Mountcastle burst onto the scene in 2021 with an impressive year that set the tone for the years after for him.
He had a .487 slugging percentage, a career high in a full 162 game season. His 114 OPS+ is the second-best mark in his career, and his .796 OPS is also a career high. Mountcastle also hit 23 doubles and mashed 33 home runs, well ahead of his next highest total of 22 a year later. He also drove in 89 runs, a number that still stands as a career best.
While he dealt with vertigo this season, Mountcastle has remained a productive hitter and had some incredible moments during the year. Just ask the Toronto Blue Jays, who he temporarily took ownership of during the season.
Cedric Mullins, 2021
Another member of the 2021 Orioles who had a stellar season was Cedric Mullins, the heir apparent to Adam Jones in center field. By far his best season, Mullins finished in ninth place in voting for AL MVP, was selected to the AL All-Star team and also won a Silver Slugger.
While his defensive skills have remained elite in 2022 and 2023, he hasn't been able to replicate the big year he had with the bat in 2021. He joined the 30-30 club with exactly 30 home runs and 30 stolen bases, hitting 37 doubles and drawing a career high 59 walks.
Mullins has continued to be a contributor to the Orioles' success in recent years, but nothing has come close to the dominant season he had in 2021 in the middle of the Camden Yards outfield.