Padres non-tendered RHP Erik Johnson.
Padres activated RHP Erik Johnson from the 60-day disabled list.
Erik Johnson underwent Tommy John surgery on Thursday.
Erik Johnson's MRI revealed a strained flexor tendon.
Padres placed RHP Erik Johnson on the 15-day disabled list, retroactive to June 29, with a right elbow sprain.
Erik Johnson wasn't particularly impressive in Tuesday's loss to the Orioles, surrendering four runs on seven hits over five innings.
Erik Johnson surrendered six earned runs in four innings while giving up nine hits, including two home runs, as his record fell to 0-3 in an inter-league loss to the Orioles on Wednesday.
Erik Johnson did not impress in Thursday's loss to the Nationals, surrendering five runs on seven hits over six innings.
Erik Johnson struggled in his Padres debut, allowing nine hits and five runs over 4 2/3 innings Saturday in a loss to the Rockies.
Padres recalled RHP Erik Johnson from Triple-A El Paso.
Padres optioned RHP Erik Johnson to Triple-A El Paso.
Scott Miller of CBS Sports reports that Erik Johnson is expected to immediately slot into the Padres starting rotation.
Padres acquired RHP Erik Johnson and INF Fernando Tatis Jr. from the White Sox for RHP James Shields.
According to Dan Hayes of CSN Chicago, Erik Johnson is believed to be part of the return package heading to the Padres for James Shields.