Ryu (back) is tentatively scheduled to throw a bullpen session Monday, the Los Angeles Times reports. The left-hander emerged from Tuesday's bullpen session with some mid-back tightness, but Ryu said he thought the issue was not serious and a subsequent MRI was returned negative. He was cleared to resume throwing on flat ground Friday and it looks like the issue will indeed end up delaying Ryu just a few days, as he suggested would be the case.