Examining Cubs' best options for fifth spot in starting rotation

Longtime Cubs starter Kyle Hendricks is expected to begin the season on the injured list. As fans on the North Side of Chicago begin getting used to the new era of Cubs baseball, president of baseball operations Jed Hoyer’s front office has an important question to answer this spring: Who will take Hendricks’ turn in the rotation while he’s injured?

As manager David Ross told reporters, including the Chicago Tribune’s Meghan Montemurro, young righties Keegan Thompson and Adbert Alzolay do not figure into the club’s rotation plans, with both players expected to start the season as members of the bullpen. That still leaves plenty of options for the final spot in the Cubs’ rotation behind Marcus Stroman, Justin Steele, Jameson Taillon and Drew Smyly, however. Two players in particular seem to have the inside track toward the first crack at starting for the big league club in 2023:

Adrian Sampson

Perhaps the most likely contender for the role, the journeyman Sampson is entering his age-31 season with a strong chance at an extended look in the big leagues for just the third time in his career. Sampson’s tenure as a member of the Cubs began late in the 2021 season following a late August call-up. Across 10 appearances and five starts, Sampson pitched well, with a 2.80 ERA (152 ERA+) in his 35 1/3 innings of work. The underlying metrics didn’t feel so positively about his performance, however, as Sampson allowed a minuscule .232 BABIP and left a whopping 88.4% of runners on base despite over one in five of his fly balls allowed leaving the yard. Those red flags left him with a concerning 5.72 ERA, but the Cubs saw enough in Sampson to sign him to another minors deal for the 2022 season.

The 2022 season proved to be something of a revelation for Sampson after he received an opportunity in Chicago’s rotation following a slew of injuries. In 104 1/3 innings across 21 appearances (19 starts), Sampson pitched to a strong 3.11 ERA (132 ERA+) that, unlike the previous season, was more supported by underlying metrics. Sampson’s BABIP of .288 and LOB% of 77.6% both returned to figures far closer to his career norms of .299 and 76%, respectively, giving him a much more palatable 3.79 FIP on the season. Much of this improvement came from a drastically reduced home run rate, however, as Sampson saw just 7.7% of his fly balls allowed leave the yard during the 2022 campaign. That rate isn’t likely to be sustainable going forward, leaving a major red flag in Sampson’s profile entering the 2023 season.

That said, given his success in 2022 and the $1.9M salary he agreed to for 2023 in a pre-tender deal with the Cubs, it would make plenty of sense if the veteran righty had the inside track to the fifth starter’s job to open the 2023 season. That being said, Sampson still has a minor league option remaining, meaning he could be stashed in Triple-A as depth should he not make the Opening Day rotation. Furthermore, for a team like the Cubs with a handful of pitching prospects approaching the big leagues, it would be understandable for the organization to prioritize figuring out what they have in those youngsters over giving a journeyman like Sampson an extended run, even following his big league success in 2022.

Hayden Wesneski

One such pitching prospect is Wesneski, the right-hander the Cubs acquired from the Yankees at the 2022 trade deadline in exchange for side-arming reliever Scott Effross. Wesneski made his big league debut in September and found instant success, even throwing an immaculate inning during his late season cup of coffee. Overall, Wesneski pitched to a sterling 2.18 ERA (190 ERA+) over 33 innings. He also struck out a quarter of opponents with a meager 5.3% walk rate, leading to an excellent 3.20 FIP backing up his raw run prevention numbers.

This fantastic performance towards the end of the season has seen Wesneski generate considerable hype throughout the offseason, and he enters spring training as Sampson’s likely biggest challenger for the fifth starter role in Chicago. As previously mentioned, the Cubs have an assortment of interesting pitching prospects in the upper levels of their minor league system, including Caleb Kilian, Ben Brown and DJ Herz. Given this reality, it would make plenty of sense for the Cubs to use these early season innings to get Wesneski more experience against big league pitching and see how the league adjusts to him following his strong debut.

However, with just four starts and six total appearances in the big leagues under his belt, it would be understandable if the Cubs wanted to take things slowly with Wesneski. After all, the righty just turned 25 years old and has multiple minor league option years remaining. Additionally, Wesneski’s 143 1/3 innings between Triple-A and the majors in 2022 was a career high, so it’s possible the Cubs will be keeping a close eye on his innings this season, while the club is still working towards a return to contention.

Other options

While Sampson and Wesneski appear to be the front-runners for the job, there’s a few other players who seem likely to be in the mix for the fifth spot in Chicago’s Opening Day rotation. Ross specifically mentioned right-hander Javier Assad as a potential candidate. Assad, like Wesneski, is entering his age-25 season in 2023 and received a brief cup of coffee in the big leagues in 2022. Over 37 2/3 innings across nine appearances and eight starts, Assad pitched to a strong 3.11 ERA (133 ERA+), but his unimpressive 18.1% strikeout rate and concerning 12% walk rate leave plenty of room for concern, as demonstrated by his 4.49 FIP.

In addition to Assad, a pair of non-roster invitees could see consideration for a rotation spot. Nick Neidert spent his career as a member of the Mariners and Marlins organizations prior to signing with the Cubs on a minor league deal this offseason, and pitched well in 2022, both in 46 innings at the Triple-A level (1.96 ERA) and in a spot start for the Marlins in the big leagues (3.60 ERA over five innings), but he spent much of the season on the injured list.

Meanwhile, Roenis Elias has some success in the big leagues, with a career 3.96 ERA (98 ERA+) and 4.26 FIP in 395 2/3 innings of work in the big leagues. Elias also delivered a particularly strong performance in the Dominican Winter League this offseason, posting a fantastic 0.92 ERA in 39 innings of work. On the other hand, most of Elias’ recent big league experience has come out of the bullpen, with the lefty starting just five major league games since the start of the 2016 season. Both Elias and Assad are also set to pitch in the World Baseball Classic this spring, giving the Cubs a unique potential look at their abilities in a more competitive setting than spring training can usually provide.

Between Sampson, Wesneski and the above trio of dark-horse options, the Cubs have an interesting choice to make ahead of Opening Day regarding who will take up Hendricks’ spot in the rotation until he returns from the injured list. It’s possible injuries could make the decision easier by that time, either by taking options out of the running or opening up more spots in the rotation for those competing. Even if that happens, though, the Cubs appear to be in a good place in terms of quality starting pitching depth as they begin to prepare for the 2023 campaign.