Super Bowl LVII: Chiefs coach Reid says Mahomes is not 100%

Kansas City Chiefs coach Andy Reid conceded Patrick Mahomes is not 100 per cent healthy ahead of Super Bowl LVII.

Mahomes' health is the dominant storyline for the Chiefs ahead of their clash with the Philadelphia Eagles at State Farm Stadium on Sunday.

He suffered a high ankle sprain in the Chiefs' Divisional round win over the Jacksonville Jaguars, an injury that forced him to come out of the game before returning in the second half.

Mahomes subsequently played through the injury in the AFC Championship Game with the Cincinnati Bengals, willing them to a thrilling 23-20 victory.

Speaking at Opening Night on Monday, Mahomes said his ankle is "definitely better", however Reid on Tuesday clarified that his star quarterback is still not at full strength.

"Yeah, so I wouldn't tell you he is 100 per cent," Reid said.

"But the training staff works with him endlessly. I guess it'd be a tribute to both of them for Pat coming back for more and for those guys cranking on him."

Despite his ankle issue, Mahomes has still performed at a very high level in the postseason.

Across his two playoff games, Mahomes has completed 69.9 per cent of his passes for 521 yards, four touchdowns and no interceptions.

Reid is used to seeing Mahomes producing magic on the field, but even he has been taken aback by what his signal-caller has produced while playing on one healthy ankle.

"So, Julie [Frymyer, Chiefs physical therapist] spent most of the time with him," Reid added. "We've got all the latest greatest stuff to use, technology-wise, so he's used it all and has been able to make these jumps here where he can actually function and play in a game, which is very remarkable."