It appears there is some confusion in your query, as the pitcher in question is not Justin Bieber, the famous singer, but rather Shane Bieber, a right-handed pitcher for the Cleveland Guardians.

Here’s an interesting article focusing on Shane Bieber and the current state of the Cleveland Guardians' pitching rotation:

## Shane Bieber's Rehab Setback: A Blow to the Cleveland Guardians

In a season already marked by challenges, the Cleveland Guardians have faced another significant setback with their ace pitcher, Shane Bieber. Bieber, who has been on a rehab assignment following Tommy John surgery, has hit a roadblock in his recovery process. This development casts uncertainty over his return to the rotation, which was initially anticipated for later this month[1].

Bieber, a key figure in the Guardians' pitching staff, signed a two-year, $26 million contract with the team this offseason, although the second year includes a player option. His health is crucial not only for the team's performance but also for his own future in free agency. If he remains healthy by the end of the season, it is likely he will opt out of the player option and re-enter the free agent market[1].

The Guardians' rotation, in Bieber's absence, has been led by a group of promising but somewhat inconsistent pitchers. Right-handers Gavin Williams, Tanner Bibee, Luis Ortiz, and Slade Cecconi, along with left-hander Logan Allen, have shown potential but also some red flags. Issues such as high walk rates for Williams, Ortiz, and Allen, and a propensity for home runs from Bibee and Cecconi, have been notable concerns[1].

Bieber's absence is felt deeply, given his impressive career statistics. With a 3.22 ERA and 958 strikeouts in 843 innings pitched, he is a cornerstone of the Guardians' pitching staff. His return would significantly bolster the team's chances, but for now, his status remains uncertain[2][3].

As the Guardians navigate this challenging period, they will have to rely on their younger and less experienced pitchers to fill the gap left by Bieber's absence. The team's collective ERA of 4.07 ranks 20th in the majors, highlighting the need for stability and consistency in their pitching rotation[1].

In summary, Shane Bieber's setback is a significant blow to the Cleveland Guardians, and his return to full health is eagerly anticipated by both the team and its fans. Until then, the Guardians will have to adapt and find ways to overcome the challenges posed by his absence.