I didn't see the game, so a quick google brought up the play and this was what was was reviewed: (fwiw- what I saw and what it said was that the ball ultimately went into the dugout, not in to fair territory as you said above)
“It's item 20 in the manual, which is, balls deflected out of play, which is in reference to official baseball Rule 5.06(b)(4)(H). It says, ‘If a fair ball not in flight is deflected by a fielder and goes out of play, the award is two bases from the time of the pitch.’”
Holbook added: “Once that ball hit the wall, it was no longer in flight. Now the ball bounces off the wall and is deflected out of play off of a fielder. That’s just a ground-rule double. There’s no ‘He would’ve done this, he would’ve done that.’ It’s just flat out in the rule book. It’s a ground-rule double.”
Reference here: https://www.mlb.com/news/rays-...3th-inning-explained