The Nationals recalled Romero from Triple-A Rochester and placed him on the 60-day injured list Thursday due to a left calf strain.

The Nationals optioned Romero (back) to Triple-A Rochester on Tuesday, Mark Zuckerman of MASNSports.com reports.

Manager Dave Martinez said Wednesday that Romero has been shut down due to a stiff back, Matt Weyrich of NBC Sports Washington reports.

Romero was placed on the temporary inactive list Monday, Jesse Dougherty of The Washington Post reports.

The Nationals promoted Romero from Double-A Harrisburg to Triple-A Rochester on Tuesday, Grant Paulsen of 106-7 The Fan Washington reports.

Romero (ribs) was reinstated from the 7-day minor-league injured list July 20 and assigned to Double-A Harrisburg. He's made one appearance for Harrisburg since being activated, striking out two over a scoreless inning.

Romero (ribs) will make a rehab start for Double-A Fredericksburg on Tuesday, Mark Zuckerman of MASNSports.com reports.

Romero (rib) recently resumed throwing at the Nationals' extended spring training facility in Florida, Matt Weyrich of NBC Sports Washington reports.

Romero (ribs) might begin a throwing progression next week, Maria Torres of The Athletic reports.

Romero is dealing with a rib injury and is unable to throw, Jesse Dougherty of The Washington Post reports.

Romero was optioned to Triple-A Rochester on Sunday, Mark Zuckerman of MASNSports.com reports.

Romero (hand) resumed playing catch and throwing bullpen sessions during the Nationals' fall instructional league in October, Byron Kerr of MASNSports.com reports.

Romero (hand) was transferred to the 45-day injured list Monday, Jessica Camerato of MLB.com reports.

Romero will undergo surgery to put a pin in his broken non-throwing (right) hand, Jesse Dougherty of The Washington Post reports.

Romero was placed on the 10-day injured list Monday with a broken right (non-pitching) hand, Brittany Ghiroli of The Athletic reports.

Romero is expected to remain in the bullpen, even when the Nationals need extra starters to cover doubleheaders, Jessica Camerato of MLB.com reports.

The Nationals selected Romero's contract from the taxi squad ahead of Thursday's game against the Mets, Brittany Ghiroli of The Athletic reports.

Romero is on the taxi squad for the Nationals' current 10-day road trip, Jessica Camerato of MLB.com reports.

Romero will be part of the Nationals' 60-man player pool, Jessica Camerato of MLB.com reports.

Romero (elbow) was healthy enough to pitch in fall instructs and should be ready to go whenever the minor-league season begins, Keith Law of The Athletic reports.

Romero (elbow) is on schedule with his throwing program and is hopeful to resume pitching in games in August, Byron Kerr of MASN Sports reports.

Romero underwent Tommy John surgery last week, Mark Zuckerman of MASN Sports reports.

Romero will report to Low-A Hagerstown, Chelsea Janes of The Washington Post reports.

Romero remains at home in Houston and has not yet proven to the Nationals that he's ready to resume his minor-league career, Chelsea Janes of The Washington Post reports.

Romero will remain in extended spring training when the minor-league season begins, Mike Rosenbaum of MLB.com reports.

Romero was sent home from spring training earlier in the week for repeated curfew violations, Chelsea Janes of The Washington Post reports.

Romero was sent home from spring training Monday due to a violation of club policy, Jeff Passan of Yahoo Sports reports.

Romero allowed just one hit over five scoreless innings Wednesday while striking out seven in short-season Auburn's 3-2 win over Williamsport.

Romero struck out five and walked one over three no-hit innings for Low-A Auburn in Tuesday's win over Connecticut.

Romero signed with the Nationals on Friday and received a $2.8 million signing bonus, slightly above slot for the 25th overall pick, Chelsea Janes of The Washington Post reports.