The Reds boss handed several young players starts at Boundary Park but saw his side fall to a 3-2 defeat in the fourth round as they were outfought by the League One outfit
The Northern Irishman gave the likes of Jack Robinson, Andre Wisdom and Sebastian Coates an opportunity to start at Boundary Park but saw his side end up on the wrong end of a 3-2 result.
And, following the game, the 40-year-old pointed to a lack of focus as the reason for the Merseysiders' poor showing. "We were coming here in good form and obviously we are bitterly disappointed," Rodgers told BBC Sport.
"I was bitterly disappointed with the young players as today they had a chance to show they can play for Liverpool and compete for a club that has to challenge for trophies.
"We lost our concentration, and only had spells in the last 35 minutes when we were at the right level. Congratulations to Oldham, though."