Here are three key questions entering the game ...
1. How will the field conditions affect the game?
The field conditions in Couva were so bad on Monday that the USA could only jog on the field and work out behind the goal.
"It definitely changes the way the game is going to look," Arena said. "It’s going to be a slow game, probably a little bit sloppy, and a little bit different than we’ve seen in any of the qualifying games. We’ll have to adapt to the conditions on the field."
Arena didn't want to dwell on the conditions or what caused them. He said he wasn't smart enough to do that.
"Whatever conditions are, it will be same of both teams," he said. "I don't think there's any politics surrounding this. I don't think a couple of years ago in Denver the U.S. had control of the climate, and I don't think Trinidad is making it rain. It is what it is, and we're going to play the game."
2. What will Christian Pulisic's availability be for the game?
Kicked in the calf by Panamanian defender Michael Murillo and forced to leave Friday's game early in the second half, Christian Pulisic was limping noticeably as he left Orlando City Stadium, making him a question mark for Tuesday night.
“The conditions on the field today were such that we weren’t really able to train," said Arena, "so I wasn’t able to see whether he could run out and all that. So we’re going to make a judgment based on how he is feeling tomorrow. But he felt good today.”
3. How many U.S. lineup changes will be made?
How important has Pulisic been? Captain Michael Bradley and he are the only U.S. players who have started all nine games in the Hexagonal.
For the last two road games -- at Mexico in June and Honduras in September -- Arena made seven lineup changes from the previous home game days earlier. It would be a surprise if he made that many changes on Tuesday, especially given how well the USA played against Panama.
He has demonstrated he is willing is change up the U.S. formation and, most critically, where Pulisic lines up from game to game.
Arena's pledge to go out and win the game -- which would be the USA's first on the road in the current Hex -- would indicate he'll stick to something resembling a 4-4-2. But he has gone with three in the back and two central midfielders, a more conservative option, in all to parts of the last two away games.
Tuesday, October 10
Trinidad & Tobago vs. USA, 8 pm ET, beIN Sports, Universo
Panama vs. Costa Rica, 8 pm ET, Telemundo Deportes
Honduras vs. Mexico, 8 pm ET Telemundo
PTS TEAM W-T-L +/-
21 *Mexico 6-3-0 14/4
16 *Costa Rica 4-4-1 13/6
12 USA 3-3-3 16/11
10 Panama 2-4-3 7/9
10 Honduras 2-4-3 10/17
3 Trin. & Tobago 1-0-8 5/18
*Qualifies for World Cup 2018.
Hexagonal Leading Scorers:
4 Clint Dempsey (USA)
4 Christian Pulisic (USA)
3 Bobby Wood (USA)
3 Hirving Lozano (Mexico)
3 Romell Quioto (Honduras)
3 Marco Urena (Costa Rica)