It was essentially a set of chalk picks for the Cards in protecting three of the four Rule 5-eligible prospects on their MLB Pipeline top 30 list, with right-hander Ian Bedell the only eligible player now available to rival clubs in December’s R5 Draft.  Bedell might be one of the more interesting names to watch heading into the Rule 5, but the Cardinals felt Kloffenstein, Robberse, and Pages were more worthy of 40-man roster spots.

Kloffenstein and Robberse only joined the organization at the trade deadline, acquired from the Blue Jays in the Jordan Hicks trade.  Both pitchers made their Triple-A debuts after coming to the Cardinals, and they’ll likely start 2024 at Triple-A as well.  Since St. Louis is aiming to add multiple new starting pitchers this winter, Robberse and Kloffenstein will be competing with the Cards’ other young arms to see who might be part of the first wave of depth starters.  It also isn’t out of the question that either could be on the move if the Cardinals pursued some experienced pitching on the trade market.

Pages was a sixth-round pick for the Cardinals in the 2019 draft, and he hit .267/.362/.443 with 16 home runs over 497 plate appearances with Double-A Springfield last season.  Speaking of trade depth, the Cards might also look to the catcher position, as they now have four backstops (Willson Contreras, Ivan Herrera, Andrew Knizner, and Pages) on the 40-man roster.

Thomas was a 40-man selection almost exactly a year ago, as St. Louis looked to protect the outfielder from the 2022 Rule 5 Draft.  The southpaw was coming off a 5.47 ERA in 135 Triple-A innings in 2022, but couldn’t make much headway last year, delivering a 5.53 ERA, 15.7% strikeout rate, and 7.0% walk rate in 94 1/3 frames for Memphis.  Thomas is a grounder specialist who has faced some heavy BABIP misfortune during his minor league career, but the Cardinals have seen enough to potentially move on from the 25-year-old.

Naughton has a 4.98 ERA over 59 2/3 Major League innings since the start of the 2021 season, with his first two big league campaigns spent shuttling back and forth from Triple-A with the Angels and Cardinals.  His 2023 campaign was essentially lost to injury, as Naughton underwent flexor tendon surgery in late June and figures to miss probably the first half of the 2024 season, based on past timelines for similar procedures.  Naughton will continue rehabbing and potentially also surface for at least some bullpen work at some point next year.

Hicks, 26, was a third-round pick in the 2015 draft by the Cardinals. He made his big league debut back in 2018 and threw 77 2/3 innings in his first big league season, with a 3.59 ERA and 3.74 FIP. While he generated an impressive 60.7% groundball rate in his rookie campaign, he posted a lackluster 20.6% strikeout rate and struggled badly with his control to the point of walking 13.3% of batters faced. Early on in his sophomore 2019 season, Hicks required Tommy John surgery. That surgery began a series of injuries and setbacks that would limit him to just 38 2/3 innings of work from 2019-21.

Finally fully healthy in 2022, the Cardinals decided to try using Hicks as a member of the rotation. That experiment did not go well, as Hicks posted a 5.84 ERA and 5.54 FIP in 24 2/3 innings of work across seven starts while walking a whopping 16% of batters faced over that stretch. While he pitched a bit better upon returning to the bullpen, he nonetheless finished the 2022 campaign with 4.84 ERA and 13.3% walk rate in 61 1/3 innings of work.

The 2023 campaign started off difficultly for Hicks once again, as he yielded a whopping nine runs (eight earned) in just 5 2/3 innings of work in his first seven appearances of the year. Since then, however, he’s settled in as one of the most dominant relievers in baseball over the past few months. Since April 18, Hicks sports a 2.25 ERA and a sterling 1.92 FIP in 36 innings of work. He’s cut his walk rate to 10.4% in that time, a figure that, while somewhat elevated, is more than made up for by a phenomenal 34.4% strikeout rate. Hicks also sports a characteristically excellent 58.3% groundball rate this season, a figure that has led him to allow just two home runs all season, and none since he got his season back on track in mid-April.

Hicks’s dominant arm makes him a perfect candidate for Toronto’s bullpen, as the Blue Jays lost closer Jordan Romano to the 15-day injured list earlier this weekend thanks to lower back inflammation. While it’s possible Romano will return fairly quickly after the minimum 15-day stint, he’s been plagued by the issue since it caused him to depart the All Star game earlier this month. Still, it would hardly be a surprise to see the Blue Jays take additional time to ensure their closer is fully healthy upon his return given both the nagging nature of the issue and the importance of Romano, who leads the AL with 28 saves this season and sports a 2.79 ERA in 42 innings this season, to the club’s success.

In return for Hicks’s services, the Blue Jays are paying a hefty prospect toll. Robberse appears to be the headliner in the deal as the club’s seventh-best prospect according to MLB Pipeline and their sixth-best prospect according to Fangraphs. Originally signed out of the Netherlands back in 2019, the 21-year-old hurler sports a 92-94 mph fastball, quality secondary offerings in both a changeup and a slider, and plus command. In 113 1/3 innings of work at the Double-A level, Robberse owns a 3.97 ERA and a strikeout rate of 22%.

Kloffenstein, meanwhile, goes unranked on both Pipeline’s and Fangraphs’s lists. Fangraphs describes Kloffenstein as a pitcher with a four-pitch mix highlighted by a sinker and a slider, though it ultimately pegs him as more of an innings-eating, depth starter type. That evaluation, however, is from prior to the 2023 campaign, where Kloffenstein has impressed to this point. Toronto’s third-round pick in the 2018 draft has shoved across 89 innings of work at Double-A this season to the tune of a 3.24 ERA with a strikeout rate of 27.6%, a figure well above his career rate of 23.5% entering the 2023 campaign.

Both Kloffenstein and Robberse clearly fit the mold of return the Cardinals have reportedly been looking for in dangling their rental arms this summer: controllable, upper-level starting pitching prospects. Both Robberse and Kloffenstein project as starters going forward and have over 100 innings of experience at Double-A, with Jeff Jones of the Belleville News-Democrat noting that both hurlers are set to be promoted to Triple-A by the Cardinals organization. Given that promotion, it seems reasonable to assume both pitchers will be on the big league radar for sometime in 2024, barring injury or ineffectiveness changing the timeline.

The deal also spells the end of White’s time in Toronto. A second-round selection by the Dodgers in the 2016 draft, White impressed with a 3.44 ERA and 3.78 FIp in 49 2/3 innings of work across his first two seasons in the majors. He continued his success in a Dodgers uniform in 2022 with a 3.70 ERA and 3.95 FIP in 56 innings of work, but the club dealt White to Toronto at the trade deadline last season. Since joining the Blue Jays, White has struggled mightily, with a 7.60 ERA in 55 2/3 innings of work. While he posted a 4.03 FIP that far outstrips his results as a member of the Jays, his walk rate has ticked up to 11.7% this season, a level unlikely to be sustainable given his mediocre 21.7% strikeout rate. Going forward, Toronto will have one week to either waive or release White, assuming he himself isn’t traded before the deadline on August 1.

Craig Mish of the Miami Herald first reported that Hicks had been traded to Toronto. FanSided’s Robert Murray reported that Kloffenstein was part of the return. Shi Davidi of Sportsnet first reported Robberse’s inclusion in the deal.

As Jonathan Mayo of MLB.com notes, 28 of the 50 players on the roster are included on MLB Pipeline’s recent Top 100 prospects list. Six of Pipeline’s top ten will participate. The full rosters (MLB Pipeline prospect rank included, if applicable):

American League

• Clayton Beeter, Yankees RHP (AAA)
• Lawrence Butler, A’s OF (AA)
• Junior Caminero, Rays INF (AA), #17 prospect
• Jonathan Cannon, White Sox RHP (High-A)
• Joey Cantillo, Guardians LHP (AAA)
• Jonatan Clase, Mariners OF (AA)
• Shane Drohan, Red Sox LHP (AAA)
• David Festa, Twins RHP (AA)
• Harry Ford, Mariners C (High-A), #29 prospect
• Drew Gilbert, Astros OF (AA), #76 prospect
• Jackson Holliday, Orioles INF (High-A), #1 prospect
• Spencer Jones, Yankees OF (High-A)
• Colt Keith, Tigers INF (AA), #43 prospect
• Heston Kjerstad, Orioles OF (AAA), #40 prospect
• Will Klein, Royals RHP (AAA)
• Justyn-Henry Malloy, Tigers INF (AAA)
• Kyle Manzardo, Rays INF (AAA), #42 prospect
• Marcelo Mayer, Red Sox INF (AA), #5 prospect
• Kyren Paris, Angels INF (AA)
• Edgar Quero, Angels C (AA), #72 prospect
• Sem Robberse, Blue Jays RHP (AA)
• Tyler Soderstrom, A’s C (AAA), #37 prospect
• Owen White, Rangers RHP (AAA), #48 prospect
• Nick Yorke, Red Sox INF (AA), #91 prospect
• Yosver Zulueta, Blue Jays RHP (AAA)

National League

• Mick Abel, Phillies RHP (AA), #46 prospect
• Ryan Bliss, Diamondbacks INF (AA)
• Jackson Chourio, Brewers OF (AA), #3 prospect
• Justin Crawford, Phillies OF (Low-A), #90 prospect
• Pete Crow-Armstrong, Cubs OF (AA), #10 prospect
• Yanquiel Fernandez, Rockies OF (AA), #97 prospect
• Kyle Harrison, Giants LHP (AAA), #14 prospect
• Tink Hence, Cardinals RHP (High-A), #66 prospect
• Brady House, Nationals INF (High-A), #75 prospect
• Jordan Lawlar, Diamondbacks INF (AA), #7 prospect
• Noelvi Marte, Reds INF (AA), #19 prospect
• J.P. Massey, Pirates RHP (High-A)
• Jackson Merrill, Padres INF (High-A), #12 prospect
• Jacob Misiorowski, Brewers RHP (High-A), #93 prospect
• Patrick Monteverde, Marlins LHP (AA)
• B.J. Murray, Cubs INF (AA)
• Nasim Nunez, Marlins INF (AA)
• Jeferson Quero, Brewers C (AA), #79 prospect
• Endy Rodriguez, Pirates INF/C (AAA), #39 prospect
• Dalton Rushing, Dodgers C (High-A), #51 prospect
• Victor Scott II, Cardinals OF (High-A)
• Spencer Shwellenbach, Braves RHP (Low-A)
• Mike Vasil, Mets RHP (AAA)
• Carson Whisenhunt, Giants LHP (AA)
• James Wood, Nationals OF (AA), #6 prospect