Dr. David Chao, who was head team physician for the San Diego Chargers for 17 years and can be found on Twitter @ProFootballDoc, agrees with Beckham’s self-assessment. Here is part of what Chao wrote recently for The San Diego Union-Tribune:
Here's Odell jumping. Notice he doesn't land on his left leg alone. pic.twitter.com/JSOkc8sk3N— Dan Duggan (@DDuggan21) September 15, 2017
The video shows he is now able now to launch off his injured (left) ankle. That’s improvement.
But watch how he lands. When he jumps off the right foot, he lands on both feet. When he jumps off the left foot, he lands only on the right foot.
There is more force generated on landing than takeoff.
If he can’t land on the left foot, he cannot aggressively plant and cut using that foot, which is how a receiver gets separation to be open.
That‘s what we know.
The rest is speculation.
The Giants can only hope that a limited Beckham is better for them than no Beckham at all.