PHILADELPHIA -- This isn't 2007 or 2011. It isn't even 2013 or 2015.

These New York Giants can't even capitalize on a vintage Eli Manning performance in the first half. Instead, they allowed a 14-point halftime lead to slip away in a 23-17 overtime loss to the Philadelphia Eagles at Lincoln Financial Field on Monday night.

At 2-11, this is as bad a Giants team as there has been during the Manning era. He has never been part of a team that has lost nine straight games, which these Giants have while tying a franchise record for futility set in 1976.

These Giants couldn't do anything in the second half on Monday. Their defense, which dominated the first half, fell apart late and allowed a touchdown on the opening drive of overtime. They failed to cover the Eagles' best receiver, tight end Zach Ertz, on the winning touchdown.

It wasted what, for most of the contest, appeared to be a feel-good night.

Manning, looking like the quarterback who had won a pair of Super Bowls MVP awards, threw for two touchdown passes in the first half. Almost all of the damage came courtesy of his connection with rookie wide receiver Darius Slayton, who had never played a game with Manning prior to Monday. Of Manning's 179 passing yards in the first half, 154 went to Slayton, who had touchdown grabs of 35 and 55 yards.

In the second half, the 2019 Giants took the field. They had 30 total yards in the second half. Manning, who was 15-for-30 for 203 yards with two touchdowns and no interceptions, reverted to the form that contributed to his 8-26 record in his previous 34 starts.

Manning fell to 0-3 as the starter this season. And being part of the 2019 Giants might affect his legacy. Manning's career regular-season record fell below .500 at 116-117.

"Yeah, I think we're a team that finds a way to lose a lot of games. Meaning, that's why I keep saying, we're an inconsistent football team. ... That's what we are as of right now. That's our team. We're an inconsistent football team," Giants running back Saquon Barkley said. "We find ways to lose games. We have to find ways to turn that to the other side and find a way to win games. When is that going to happen? I have no idea."

Buy on Darius Slayton: The rookie receiver had himself a game. His 154 yards receiving was the most by a Giants receiver at the half since Plaxico Burress in 2005. The two touchdowns also gave him three multi-touchdown games this season. That is the most by a Giants rookie since Odell Beckham Jr. (4) in 2014. Slayton leads the Giants in receiving yards and touchdowns.

Wide receivers coach Tyke Tolbert said this week it was the fifth-round pick's improvement on his routes that stands out. That has been noticeable, with Slayton being able to get open on a regular basis, no matter the opponent. It was apparent again against the Eagles.

Eye-popping NFL Next Gen stat: Of the Giants' 255 total yards, 252 yards came out of 11 personnel. Almost all of their offense came with one running back and three wide receivers. They ran 79% of their offensive plays out of this formation. The Giants had run 71% of their plays out of 11 personnel entering Monday night. It had produced 77% of their total yards. It produced 99% of their total yards against the Eagles.