The Ravens switched returners and bolstered the secondary depth the day before taking on the Denver Broncos at M&T Bank Stadium.
Baltimore promoted wide receiver/returner Tim White and defensive back Robertson Daniel from the practice squad and waived wide receiver/returner Janarion Grant and offensive lineman Jermaine Eluemunor.
The Ravens originally picked Grant over White after a tight competition this summer, but the undrafted rookie has fumbled twice in two regular-season games. The Ravens didn't turn over possession either time, but it was concerning. At the same time, he showed his big-play ability with a 51-yard punt return in Week 1 against the Buffalo Bills.
On Monday, Head Coach John Harbaugh said the Ravens would "monitor" the situation with Grant's ball security, and Grant and White continued to compete for the job in practice.
Baltimore also made the move to bring up Daniel because it's shorthanded in the secondary. Cornerback Jimmy Smith is still suspended for two more games, Maurice Canady was placed on injured reserve this week and rookie cornerback Anthony Averett (hamstring) has been ruled out for Sunday's game.
That meant the Ravens would have had only Marlon Humphrey, Brandon Carr, Tavon Young and undrafted rookie Darious Williams available against the Broncos.
Eluemunor was a Ravens fifth-round pick out of Texas A&M last year who played in eight games and started two as a rookie. The England native is still developing after getting a late start in football.