1:27 PM - Luke Jackson (SF) (back) is currently throwing from 90 feet, Maria I. Guardado of MLB.com reports.

6:58 PM - Luke Jackson (SF) Giants placed Jackson on the 15-day injured list Friday with a lower-back strain, Maria I. Guardado of MLB.com reports.

7:22 PM - Luke Jackson (SF) suffered tightness in his lower back Thursday against San Diego and is being sent for an MRI, Shayna Rubin of the San Francisco Chronicle reports.

6:29 PM - Luke Jackson (SF) left in the seventh inning of Thursday's game against the Padres, Andrew Baggarly of The Athletic reports.

3:55 PM - Luke Jackson (SF) has allowed one run on one hit and one walk while striking out four over two Cactus League innings.

9:48 AM - Luke Jackson (SF) was activated from the paternity leave list Thursday.

7:49 PM - Luke Jackson (SF) was placed on the Paternity List prior to Monday's game against the Padres.

9:34 AM - Luke Jackson (SF) (1-2) took the loss Tuesday, surrendering four runs on three hits in two-thirds of an inning as the Giants fell 11-8 to the Cubs. He struck out two.

12:46 PM - Luke Jackson (SF) (1-1) allowed two runs (one earned) on a hit and two walks while striking out one in two-thirds of an inning to take the loss and a blown save Sunday versus the Athletics.

5:14 PM - Luke Jackson (SF) (back) was activated from the 15-day injured list Saturday, Susan Slusser of the San Francisco Chronicle reports.

5:15 PM - Luke Jackson (SF) (back) is likely to be activated from the injured list this weekend, Susan Slusser of the San Francisco Chronicle reports.

3:58 PM - Luke Jackson (SF) (back) will begin a rehab assignment with the Giants' Arizona Complex League affiliate Thursday, Susan Slusser of the San Francisco Chronicle reports.

4:09 PM - Luke Jackson (SF) was placed on the 15-day injured list Sunday with a lower-back strain.

6:18 PM - Luke Jackson (SF) was pulled from his appearance Saturday due to lower back tightness, Maria I. Guardado of MLB.com reports.

6:09 PM - Luke Jackson (SF) was removed from Saturday's game against Arizona with an apparent injury, Maria I. Guardado of MLB.com reports.

12:35 PM - Luke Jackson (SF) (1-0) allowed a hit and struck out three in a scoreless inning to earn the win in Tuesday's 11-3 victory over the Cardinals.

6:43 PM - Luke Jackson (SF) Francisco activated Jackson (elbow) from the 60-day injured list Tuesday, Evan Webeck of The Jose Mercury News reports.

3:31 PM - Luke Jackson (SF) (elbow) could be activated from the 60-day injured list this week, Danny Emerman of KNBR 680 San Francisco reports.

7:56 PM - Luke Jackson (SF) (elbow) will pitch again Saturday in a rehab appearance for Triple-A Sacramento.

6:34 PM - Luke Jackson (SF) (elbow) moved his rehab assignment to Triple-A Sacramento on Tuesday, Susan Slusser of the San Francisco Chronicle reports.

1:25 PM - Luke Jackson (SF) (elbow) is beginning a rehab assignment with Single-A San Jose on Sunday, Alex Pavlovic of NBC Sports Bay Area reports.

6:08 PM - Luke Jackson (SF) (elbow) was moved to the 60-day injured list Saturday.

11:09 AM - Luke Jackson (SF) Giants placed Jackson (elbow) on the 15-day injured list Thursday.

11:08 AM - Luke Jackson (SF) (elbow) threw his third bullpen session of the spring Wednesday, Evan Webeck of the San Jose Mercury News reports.

1:19 PM - Luke Jackson (SF) (elbow) signed a two-year, $11.5 million contract with the Giants on Monday.