Jul 18, 2022; Los Angeles, CA, USA; Cincinnati Reds pitcher Luis Castillo (58) looks on during the 2022 Home Run Derby at Dodgers Stadium. Mandatory Credit: Gary Vasquez-USA TODAY Sports Gary Vasquez/USA TODAY Sports

The Cincinnati Reds traded Luis Castillo to the Seattle Mariners in exchange for prospects Edwin Arroyo, Noelvi Marte, Andrew Moore and Levi Stoudt. Marte was the Mariners’ top-ranked prospect, Arroyo was third, and Stoudt was fifth.

The Mariners trading for Castillo fortifies their starting rotation as the team looks to reach the postseason for the first time since 2001. Seattle owns the longest playoff drought among the four North American professional sports.

Castillo was the consensus best starting pitcher available at the Aug. 2 MLB trade deadline this season. That title now gets passed to Oakland Athletics right-hander Frankie Montas.

The Mariners, Los Angeles Dodgers, New York Yankees, San Diego Padres, St. Louis Cardinals and Toronto Blue Jays were among the teams connected to Castillo over recent weeks.

Although the two-time All-Star did not wind up with the Dodgers, manager Dave Roberts took a positive outlook on the Castillo trade getting him out of the National League, via Bill Plunkett of the Southern California News Group:

Castillo, 29, is under team control through the 2023 season via a final year of arbitration eligibility. Castillo went 4-4 with a 2.86 ERA, 3.20 FIP and 1.07 WHIP over 14 starts for the Reds this season.

He’s a lifetime 44-53 with a 3.62 ERA over parts of six years in the Majors.

How Luis Castillo trade impacts Dodgers, Juan Soto

With the Mariners trading for Castillo, it presumably removes them from the Juan Soto sweepstakes.

The Cardinals, Dodgers, Padres and Texas Rangers are among the teams that most prominently have been reported as having interest in a Soto trade. Though, the Dodgers are said to have attempted to engage the Los Angeles Angels on a potential Shohei Ohtani trade as well.

When recently discussing the trade deadline, Roberts said he didn’t believe the Dodgers have any glaring needs but he anticipated president of baseball operations Andrew Friedman evaluating all options that could improve the roster.

More must-reads:

TODAY'S BEST
Watch: Tyrese Maxey saves Sixers' season with two huge shots
Hurricanes eliminate Islanders with help of third-period rapid-fire goals
Mike Trout's career hits another major hurdle with latest injury
Clippers' Kawhi Leonard to remain out for Game 5
LeBron James takes to social media to address rumors about Lakers future
Watch: Tigers' Jack Flaherty ties AL record by striking out first seven batters
Jaguars make two surprising releases
Astros to option former MVP
RB Ezekiel Elliott seems grateful about reunion with Cowboys
Predators score late against Canucks to avoid elimination
Avalanche beat Jets to advance to NHL playoffs second round
A different dynamic duo lifts Bucks to Game 5 win
Watch: Evan Mobley’s late block saves Game 5 for Cavaliers
Watch: Brewers, Rays clear benches as wild brawl breaks out
Watch: Swarm of bees delays Dodgers-Diamondbacks game for nearly two hours
Four-time Pro Bowl CB calls it a career
Watch: Maple Leafs stay alive thanks to OT winner by Matthew Knies
Rams sign longtime Eagles running back
Game 5 status revealed for injured Bucks stars Giannis Antetokounmpo, Damian Lillard
Maple Leafs without Auston Matthews for Game 5 vs. Bruins

Want more sports news?

Join the hundreds of thousands of fans who start their day with Yardbarker's Morning Bark, the best newsletter in sports.