Left-hander Hyun-Jin Ryu is headed back to the injured list with a case of neck soreness, the Dodgers announced Friday. In a series of corresponding roster moves, right-handed pitchers Dustin May and Tony Gonsolin will be brought up from Triple-A Oklahoma City, while fellow righty Dylan Floro has been optioned to Triple-A and lefty Scott Alexander has been shifted to the 60- day injured list with an ongoing bout of left forearm inflammation. It's the second IL stint of the year for Ryu, who delivered six shutout innings for the club during his last start on Wednesday.