The Athletics announced today that righty Daniel Mengden has undergone surgery on his righty foot after suffering a fracture during a home bullpen session. He’ll require a walking boot for at least six weeks, with further rehab presumably required beyond that point.
Clearly, Mengden won’t be able to participate in Spring Training, which is set to open for A’s pitchers and catchers in less than a week. Even if he’s able to get back on the hill not long after the boot comes off, he’ll need some time to build back his arm strength.