The Phillies announced Wednesday that Kerkering will be delayed at the start of spring training while he recovers from a Grade 1 hamstring strain, Matt Gelb of The Athletic reports.
Alvarado (forearm) was seen throwing a bullpen session Wednesday during the Phillies' first workout of spring training, Lochlahn March of The Philadelphia Inquirer reports.
Phillies manager Rob Thomson said Monday that he doesn't anticipate Wheeler (shoulder) being ready for Opening Day, but he "doesn't think he'll be too far behind that," Paul Casella of MLB.com reports.