Mets weigh a piggyback rotation for a pivotal Padres series, lining up Clay Holmes and Sean Manaea in tandem with Jonah Tong possibly stepping in. Holmes has been efficient only intermittently and often cannot finish outings, Manaea is having his worst season with a flat fastball and a highly slugging changeup, and Tong remains raw. Off-days give the Mets flexibility to experiment as they chase rotation stability in the second half.