Mariners Grab Luis Castillo From Reds in Five-Player Deal

After a small amuse-bouche in the form of an Andrew Benintendi trade to get our deadline appetites drooling in anticipation, the Mariners have served up a mighty entrée in the form of landing Luis Castillo, arguably the best pitcher plausibly available this week, in a late Saturday trade. Heading the quartet of players heading to Cincinnati is shortstop Noelvi Marte, the No. 11 prospect both on the midseason update on The Board and in my preseason ZiPS Top 100 Prospects. Joining Marte is shortstop Edwin Arroyo, starting pitcher Levi Stoudt, and reliever Andrew Moore.
Castillo’s season got off to a rocky start thanks to lingering issues with a sore shoulder. Those are always concerning, but he was able to debut in early May after a thankfully eventless rehab stint. After some spotty command in his first game back, he’s been absolutely solid, making his second All-Star team this year; in 14 starts for the Reds, he has struck out 90 batters against 28 walks, putting up an ERA of 2.86, a FIP of 3.20, and 2.1 WAR. That’s enough for 16th in the NL despite Castillo not debuting until Cincinnati’s 29th game. While it wouldn’t impress Old Hoss Radbourn or Amos Rusie, Castillo is a workhorse by 2022’s standards, finishing the fifth inning in every start since his first one and boasting a streak of four consecutive games of at least seven innings, with three of the four opponents (Braves, Rays, Yankees) being quite dangerous.
Naturally, landing Castillo makes Seattle’s rotation a considerably more dangerous unit. ZiPS gives it an even bigger boost than our depth charts do, bumping it from 18th in the league in projected rest-of-season WAR to 10th. Overall, ZiPS thought the Mariners were a .527 team going into the season, and now my projections see them as a .545 team with an 84% chance of making the playoffs, up from 76%. This move is more about making the team as dangerous in the playoffs as possible; the Mariners could add Juan Soto, too, and the math of an 11-game deficit would still make winning the AL West a tough road.
As exciting as it is to see the Mariners do whatever they can to push themselves over the top this season, this move may even be a bigger deal for the 2023 season. Pencil in $15 million for Castillo’s salary, and the M’s have a committed luxury tax number of just around $115 million, with only Adam Frazier and Mitch Haniger as significant free agents. Having a solid rotation already put together gives Seattle nearly unlimited options this winter.
Player | W | L | ERA | G | GS | IP | H | ER | HR | BB | SO | ERA+ | WAR |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Luis Castillo | 13 | 7 | 3.09 | 28 | 28 | 163.0 | 133 | 56 | 13 | 59 | 177 | 135 | 4.1 |
Robbie Ray | 12 | 9 | 3.44 | 31 | 31 | 183.3 | 141 | 70 | 28 | 57 | 230 | 121 | 3.9 |
Logan Gilbert | 11 | 9 | 3.79 | 30 | 30 | 159.0 | 145 | 67 | 22 | 45 | 159 | 110 | 2.8 |
George Kirby | 6 | 6 | 3.95 | 25 | 25 | 134.3 | 129 | 59 | 25 | 22 | 137 | 105 | 2.1 |
Chris Flexen | 9 | 9 | 4.34 | 29 | 27 | 151.3 | 157 | 73 | 21 | 44 | 113 | 96 | 1.7 |
Marco Gonzales | 10 | 11 | 4.66 | 27 | 27 | 148.7 | 152 | 77 | 26 | 47 | 101 | 89 | 1.1 |