The Cubs have stripped away nearly all of their big-league depth at third base, leaving Matt Shaw as the clear frontrunner for the position with Miles Mastrobuoni and Rule 5 pickup Gage Workman as the next line of defense. They’d obviously like to add a viable option to challenge Shaw during spring training and provide a safety net should the club’s No. 1 prospect falter. Given Nico Hoerner‘s uncertain availability following offseason forearm surgery and the strong potential for Dansby Swanson to need a little time off here and there, positional versatility appears to have been the priority to this point.