MLB Lineup Report: Walker Jenkins set to debut, Bryce Harper's dual eligibility

As the 2026 MLB regular season winds down, exciting developments are unfolding in the world of fantasy baseball. One of the most anticipated lineup changes was set to take place on Monday, with Arizona Diamondbacks' pitcher Walker Jenkins finally making his debut. Meanwhile, Bryce Harper, the star outfielder for the Philadelphia Phillies, has been granted dual eligibility, adding another layer of intrigue to the ongoing lineup debates.

The Arizona Diamondbacks have faced challenges in their rotations, with Jordan Lawlar only starting against one of the four right-handers since returning from the injured list. Lars Nootbaar and Max Kepler maintain their strong-side platoon roles, while Ildemaro Vargas has stepped in for Ketel Marte at second base, though Marte's return is expected within the next week.

Across the league, various teams have seen significant lineup changes. The Atlanta Braves, for instance, have seen Maury Dubón hit cleanup against three right-handers, a surprising turn of events given the initial expectations. Meanwhile, the Baltimore Orioles have seen Samuel Basallo fill in for Adley Rutschman, who has been sidelined. Jackson Holliday is leading off for the Orioles every day, while Dylan Beavers, Coby Mayo, and Christian Encarnacion-Strand have been hot at the plate but not playing every day.

For streamers, Teams like the Boston Red Sox are particularly worth watching, as Roman Anthony and Trevor Story's returns from rehab assignments could dramatically impact the lineup between Andruw Monasterio at shortstop, Nick Sogard at leadoff, and Mickey Gasper at DH.

The offseason has seen a flurry of changes, with players like Eric Samulski, Pedro Ramirez, and Tristan Peters making significant impacts. Eric Samulski, in particular, has been up to 17 starts at shortstop, and Pedro Ramirez has emerged as a key player, gaining considerable playing time since Dansby Swanson's return to the injured list.

As the season nears its end, fantasy managers are advised to stay vigilant and seize any available opportunities, particularly with players like Tristan Peters who have been on a hot streak.