In response to TheExaminer's comment:
.....and no one else on MLB Network believes him. Nobody. They're being nice and professional about it, but ain't buyin' what Wil Myers is sellin'.
The guys at ESPN had a different take, and made some pretty good points.
For one, Myers isn't the best defensive player to begin with. He has a -4 DRS and a -2.5 UZR/150.
For two, you know how loud the crowd at Fenway can get. Throw in that it's a playoff game and that Papi just hit the ball a long way, and it's hard to hear anyone call "I got it", even your teammate on the field close to you.
How many times in regular season games can you clearly see a defender calling "I got it" and the other defender doesn't hear him?
For three, outfielders are trained that the CF has precedence over the other outfielders on balls that they can both get to. They are trained to pull off on such fly balls. As Myers was going to the ball, he could clearly see Jennings out of the corner of his eye. Not when he was about to catch the ball, but a brief moment before then.
Myers is a rookie. He likely just overthought the play, 2nd guessed it, panicked, had a mental lapse, or whatever you want to call it.