The England midfielder came off the bench on Sunday just before the hour with his side trailing 3-1 at Oldham and although it prompted an improved display it could not stop a shock FA Cup fourth-round exit.
Rodgers rested the 32-year-old, who has played every minute of every league game this season, along with the likes of Jamie Carragher and Stewart Downing but found their replacements wanting.
"I can't rely on Steven for 70 games. He has been absolutely incredible," said the Reds boss.
"He shouldn't be expected to come and win games on his own.
"He came on and gave a real impetus to the team and his quality was there to be seen.
"Steven Gerrard and Stewart Downing come on and it is a different game and for 35 minutes we were terrific but it is too late then because we are 3-1 down then.
"It wasn't good enough."