As the MLB season progresses, streaming options on the waiver wire become essential for fantasy baseball managers looking to bolster their rotation. Here are ten pitchers, all rostered in under 80% of CBS Sports leagues, to consider for Week 12 (June 9-15). These pitchers could provide significant value, especially in two-start scenarios.

Eury Pérez returns from Tommy John surgery, facing the Pirates and Nationals in his first week back, presenting solid matchup potential. Jack Leiter, contingent upon the Rangers' rotation adjustments, offers a strong ERA but faces uncertainty in his second start.

Griffin Canning has been effective lately, although his high walk rate raises concerns. Zebby Matthews is gaining trust within the Twins' rotation and faces manageable lineups. Meanwhile, Hayden Birdsong’s performances suggest he could thrive at Coors Field against a struggling Rockies offense.

Jeffrey Springs and Luis Ortiz also make the list, each with favorable matchups that could lead to quality starts. Mitch Keller's recent struggles somewhat mitigate his streaming appeal, but he remains a candidate. Finally, Clarke Schmidt benefits from two starts, one against a weak Royals lineup. Each of these pitchers presents varying levels of risk and upside for managers looking to maximize their pitching stats this week.

Kevin Gausman faced a challenging outing against the Tampa Bay Rays, allowing six runs on ten hits in a loss for the Toronto Blue Jays. Gausman expressed frustration with the inconsistency of his splitter, a key pitch for setting up his fastball. Striking out six over 5 2/3 innings, Gausman gave up three home runs, marking a season high. Despite the performance, he believes he's on track to regain the effectiveness of his splitter, which has been unreliable at times.

Blue Jays manager John Schneider noted that Gausman displayed good stuff and was aggressive with his fastballs, though the Rays capitalized on mistakes. Newly acquired pitcher José Ureña is set to start on Saturday against the Detroit Tigers after pitching an inning of relief.

As we dive into Week 4 of the 2025 MLB season, savvy fantasy managers can look towards injured players for potential stashing opportunities. Notable names on the injured list include Ronald Acuña Jr. and Spencer Strider, two high-impact players who, when healthy, can significantly boost any fantasy roster. Meanwhile, young talents like Ezequiel Tovar and Jackson Merrill are also worth monitoring for their potential returns. With strategic planning, these injured players can provide an edge in competitive leagues.

Addressing the injuries, Spencer Strider's recent hamstring issue is a significant concern as he was already recovering from elbow surgery. His high strikeout potential makes him a prime buy-low candidate if you can afford to wait. Ezequiel Tovar's hip injury has slowed his promising start, but owners should consider acquiring him for his potential power output. Stashing under-the-radar players like Ivan Herrera and Tyler Stephenson can also yield dividends upon their returns, particularly in leagues with deep rosters.

With spring training in full swing for MLB teams, several starting roles are up for grabs, particularly in the American League Central division, which has significant fantasy implications. The Chicago White Sox are evaluating their shortstop options, with Colson Montgomery making a strong initial impression despite his struggles at Triple-A last season. Meanwhile, Luis Robert is likely to split time as designated hitter to manage his health, while the catcher position is crowded with promising young talent like Edgar Quero and Kyle Teel. The White Sox's closer situation appears murky, with several candidates, including Prelander Berroa, struggling with injuries.

In Cleveland, the Guardians are looking for answers at second base after trading away Andres Gimenez, with Juan Brito standing out as an intriguing prospect. Right field remains a position of uncertainty after a rotation of players last season, with Jhonkensy Noel and Will Brennan vying for playing time. The Guardians' pitching depth continues to inspire confidence, despite some uncertainty around their rotation.

The Detroit Tigers face crucial decisions in their pitching staff, as a recent injury to Alex Cobb opens up potential spots for young arms like Jackson Jobe and Casey Mize. In Kansas City, the competition for the fifth starter spot is heating up, with Kris Bubic looking to secure a rotation role. The closer role is a bit clearer with Carlos Estevez likely to see the majority of save opportunities, particularly with Lucas Erceg pushing for earlier-game leverage.

Lastly, the Minnesota Twins have introduced new faces in their infield, with the signing of Ty France causing ripples, but primarily, Jose Miranda and Edouard Julien are poised to compete for key spots. The health and performance of pitchers like Chris Paddack will be critical to their success this season.