Rockies To Select Mike Moustakas, Ty Blach, Harold Castro

Infielder Mike Moustakas has told reporters, including Danielle Allentuck of The Denver Gazette, that the Rockies have informed him that he’s made the club’s Opening Day roster. Moustakas, 34, signed with the Rockies after being released by the Reds earlier this offseason. As Moustakas is still owed $22MM of his four-year, $64MM contract with the Reds, the Rockies will only pay Moustakas the big-league minimum salary of $720,000 this season.

In addition, the Rockies are set to select the contract of left-hander Ty Blach, sources tell MLBTR’s Steve Adams. Allentuck adds that infielder Harold Castro will also be on Colorado’s Opening Day roster, and that Brendan Rodgers, Sean Bouchard, and Ryan Rolison were moved to the 60-day IL to clear 40-man roster space for Moustakas, Blach, and Castro.

Over twelve seasons as a big leaguer, Moustakas has proven to be a roughly league-average bat with a career slash line of .247/.308/.434 (97 wRC+). That being said, he was an above average regular from 2015 to 2020, as he slashed .262/.326/.490 with a wRC+ of 113 in 661 games for the Royals, Brewers, and Reds. The past two seasons have been difficult for Moustakas, however. In 140 games between 2021 and 2022, Moustakas has struck out in 24.6% of plate appearances, a significant leap from his career 16.8% rate. Between that strikeout rate and a dip in slugging (his .145 ISO from 2021-2022 is a step back from his career level of .187), it’s no surprise that the aging slugger struggled to a wRC+ of just 73 the past two seasons.

Despite his struggles, the Rockies decided to take a chance on Moustakas following Rodgers’s shoulder injury this spring, which will likely cause him to miss the 2023 campaign. Moustakas figures to be the everyday third baseman for the Rockies, with Ryan McMahon sliding over to second to cover for the injured Rodgers.

With top prospect Ezequiel Tovar entrenched at shortstop, Castro appears set to play for the Rockies in a utility role this season. Such a role is familiar to Castro, who has played every position on the diamond except catcher during his career. Since debuting with the Tigers in 2018, Castro has appeared in 351 games, slashing .284/.309/.377 for a wRC+ of 88, just below the league average of 100. Despite that mediocre slash line, Castro still provides a versatile lefty bat off the bench for the Rockies.

Blach, meanwhile, figures to slot into a long relief role for the Rockies. With 370 2/3 career major league innings under his belt, Blach has a 5.10 ERA, good for an ERA+ of just 82, though his 4.35 FIP and a strand rate of just 55.4% in 71 1/3 innings since the start of the 2019 season indicate there may be bad luck baked into his run prevention numbers. With his first season following Tommy John surgery in 2020 under his belt, the 32 year-old Blach will look to bounceback into the swing role he held for the Giants from 2016 until 2019.