Tampa Bay Rays right-hander Alex Cobb is expected to be released from the hospital one day after he was hit in the right ear by a line drive.

The Rays announced the news before Sunday's game with the Royals. The pitcher will likely be discharged from the hospital Sunday afternoon. The team says he'll be placed on the 7-day concussion list.

Cobb texted teammates Sunday morning, including pitcher Matt Moore, saying he has a headache but will be leaving the hospital later Sunday.

He said in a tweet Sunday morning that he "woke up with only a minor headache" and thanked the Rays trainer Ron Porterfield and the staff at Bayfront Medical Center in St. Petersburg.

Cobb was struck by a liner off the bat of Kansas City's Eric Hosmer in the fifth inning of Saturday's game but remained conscious the whole time. He was taken off the field on a stretcher and transported to the hospital.

The incident involving Cobb was the fifth time in the last five months of regular and postseason major league action that a pitcher has been hit in the head by a liner and the second such episode in a game this spring involving the Rays at Tropicana Field, as last month Toronto's J.A. Happ was hit on the left ear by a shot off the bat of Tampa Bay's Desmond Jennings.

Beginning with then-Oakland Athletics pitcher Brandon McCarthy suffering life-threatening head injuries when struck by a ball off the bat of the Los Angeles Angels' Erick Aybar on Sept. 5, four of the five incidents involved contact below where a cap covers the pitcher's head. MLB says it is actively trying to come up with a protective cap, with padding to decrease the risk of injury on balls that hit above the cap line -- but no efforts are underway to achieve broader protection of the head.