The Red Sox placed Giolito (elbow) on the 60-day injured list Sunday, Mac Cerullo of the Boston Herald reports.

Giolito underwent an internal brace procedure Tuesday to repair the UCL in his right elbow, Chris Cotillo of The Springfield Republican reports.

Giolito will undergo surgery Tuesday to repair UCL damage in his right elbow, Sean McAdam of The Springfield Republican reports.

Red Sox manager Alex Cora said that Giolito will receive a second opinion on his injured right elbow Monday, Jen McCaffrey of The Athletic reports.

Initial imaging on Giolito's right elbow showed a partial UCL tear and flexor strain, Jeff Passan of ESPN.com reports.

Red Sox manager Alex Cora said Tuesday that Giolito felt right elbow soreness after his last Grapefruit League appearance and is not expected to be ready Opening Day, Jen McCaffrey of The Athletic reports.

Giolito allowed four runs on two hits and three walks while striking out one over 2.1 innings in Friday's spring start against the Twins.

Giolito signed a two-year, $38.5 million contract with the Red Sox on Friday, Jeff Passan of ESPN.com reports.

Giolito came away with a no-decision Tuesday in the Guardians' 11-7 loss to the Reds, coughing up five runs on four hits -- including three home runs -- and five walks over 3.1 innings. He struck out five.

Giolito (8-14) took the loss Wednesday, allowing four runs on seven hits and three walks over 5.1 innings against Kansas City. He struck out six.