Overton (elbow) has given up five earned runs on five hits and one walk while striking out three over 6.1 innings in two relief appearances for Triple-A Louisville since being reinstated from the 7-day injured list Tuesday.

Overton (elbow) is going back out on a rehab assignment at the rookie-level Arizona Complex League on Tuesday, Charlie Goldsmith of The Cincinnati Enquirer reports.

Overton (elbow) began a rehab assignment in the rookie-level Arizona Complex League on May 14 and has allowed three runs (two earned) on three hits and one walk while striking out three across three innings over three rehab appearances.

Overton (elbow) cleared waivers and was outrighted to Triple-A Louisville on Monday.

Overton underwent Tommy John surgery Tuesday, Bobby Nightengale of the Cincinnati Enquirer reports.

Overton will undergo right elbow surgery Tuesday after encountering a recent setback, Bobby Nightengale of the Cincinnati Enquirer reports.

Cincinnati transferred Overton (elbow) from the 15-day injured list to the 60-day injured list Sunday, Paige Leckie of MLB.com reports.

Manager David Bell said Sunday that Overton (elbow) isn't expected to return from the injured list until mid-July, Bobby Nightengale of the Minneapolis Star Tribune reports.

Reds manager David Bell said Tuesday that Overton (elbow) could resume throwing in 7-to-10 days, Charlie Goldsmith of The Cincinnati Enquirer reports.

Overton was placed on the 15-day injured list Saturday with a right elbow strain.