With corner Vernon Hargreaves expected to be sidelined a few weeks with a groin injury suffered in Thursday's preseason opener, the Bucs have signed two undrafted rookie cornerbacks in Central Michigan's Amari Coleman and Georgia's Aaron Davis.
To make room for the two corners, the Bucs waived DE Kiante Anderson, a late addition to training camp, and waived-injured TE Donnie Ernsberger, who had gotten a $15,000 bonus in signing with the Bucs after the draft.
The Bucs made an additional roster tweak at tight end, waiving rookie Jason Reese and signing former LSU and Colts tight end Colin Jeter.
Coleman, 21, signed with the Lions after the draft and was waived last week. Smaller at 5-11, 188 pounds, he had three interceptions and eight pass breakups last year for the Chippewas.
Davis, 23, signed with the Giants after the draft and was waived with an injury settlement after a hamstring injury in June. He's bigger at 6-1, 195 pounds and went to Georgia as a walk-on but ended up starting 45 games over four years.
Veteran Brent Grimes could return healthy this week, but if he and Hargreaves are still sidelined, the Bucs would have seven healthy cornerbacks for next week's game at the Titans: five rookies, Ryan Smith and Javien Elliott.
Jeter, 23, had 23 catches for 289 yards and two touchdowns at LSU in 2015-16, and he spent the 2017 preseason with the Colts before being waived with an injury settlement. He's listed at 6-foot-6, 251 pounds.