Burdi (elbow) is scheduled to undergo Tommy John later this week, Scott Merkin of MLB.com reports.
The worst-case scenario will in fact come to fruition, as Burdi will now likely be knocked out of competitive game action until the 2019 campaign. The hard-throwing right-hander posted a 4.05 ERA and a 51:17 K:BB in 33.1 innings pitched out of Triple-A Charlotte's bullpen this season, but he'll have to focus on rehabbing his injured elbow for roughly the next year and a half.