Photo: Marcio Jose Sanchez, Associated Press Photo: Al Bello, Getty Images Photo: Marcio Jose Sanchez, Associated Press

How bad are the New York Giants?

They are underdogs against an 0-9 team that has lost 23 of its last 24 games and might need to get creative to dress 46 healthy players.

Yes, that’s right: The winless and injury riddled 49ers are one-point favorites entering Sunday’s meeting against the Giants (1-7) at Levi’s Stadium, where the home team has lost a franchise-record 11 straight games.

The 49ers haven’t been favored this season, and were last in this position when they were three-point favorites entering a 23-17 overtime loss to the Jets on Dec. 11, 2016 (something about those New York teams).

So how can the Giants be in this position? They are making a cross-country trip after a 51-17 home loss to the Rams in which they allowed 41 points in less than 27 minutes, a stretch during which they surrendered a 52-yard touchdown pass on 3rd-and-33.

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Wrote Newsday’s Bob Glauber of the Giants’ worst home loss since 1964: “It has become increasingly obvious that Ben McAdoo has lost his team, and the woeful effort put forth in one of the most humiliating losses in franchise history has all but ensured his ouster.”

It’s so bad they aren’t favored to beat the 49ers, who have been outscored by 63 points in their last three games.

According to ProFootballReference.com, the 49ers have been favored in just two of their first 41 games in the post-Harbaugh era, with each game coming last year:

12-11-16 (favored by 3): Lost 23-17 in OT to Jets

12-4-16 (favored by 1): Lost 34-17 to Buccaneers

Twitter: @Eric_Branch