I'm going to play an expert tomorrow as black, he almost exclusively plays 1.D4 so what is a really drawish opening against D4, like statistically what is the most drawish?

Go to game explorer.

i can only go a couple moves deep with the stats staying because my diamond membership expired

just knowing the first move in the most drawish opening won't be good enough, I need to get into theory.

My advice would be to avoid a drawish position at all costs because the largest gap in your skill levels will be in endgame play.  Instead play something sharp where you have a chance to catch him off guard.

actually the endgames are what i'm least worried about, his endgames are absolutely dreadful. If i get to the endgame on even ground there is no way I'm losing that match.

Budapest gambit. Rare enough that he likely doesnt have it memorized. Easy enough for you to go over tonight.

i've played it against him in the past he either plays Bf4 or the alekhine lines which are both good for white, i don't consider the budapest gambit drawish.

Play the Tarrasch.

1.d4 d5 2.c4 e6 3.Nc3 c5

It's drawish, sort of. At the highest levels. If you know how to play the IQP type of position. Yadda yadda yadda.

If you just want "solid" then try the orthodox queen's gambit. 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 o-o 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.o-o Nxc3 12.Rxc3 e5

If you want another option try the QGA. 1.d4 d5 2.c4 dxc4

If you want to lose play the Englund. 1.d4 e5

are there any drawish openings after 1.D4 1...Nf6, i study these lines the most so a drawish line in one of these openings would be good.

ozzie, after the rubinstein variation of the tarrasch white has a marked advantage, according to GM reuben fine.

Petroff...

that must be the system with g3, Bg2, and Be3?

Yes, I've read that too. I would tend to agree, but it's a decent opening for black, I think. I believe that many of the games from the early K-K matches featured either the Tarrasch or the Semi-Tarrasch. So that would be where I would start if I wanted to learn it.

if youre careful enough try to get closed positions not open ones

a position where play is very shut down can lead to draws, unless one player or the other doesn't/does see key tactics

1984 match: game 7, game 9, and I believe plenty more. I read in a different forum here that Kasparov stopped playing it after the 1984 match because Karpov found a good way to play against it. So I would look at those games, and a different site says that Kasparov played it in all his Candidate matches up before the 1984 match.

photo,that is a good idea, but he is a very good positional player, so in closed positions he probably boa-constrictor me...If it is closed and I have space sure, but mostly when I get into a closed position(as black) my opponent has a space advantage, if i can avoid this a closed position would be fine

The Queen's Indian Defense has a drawish reputation. I'd recommend learning some basic Nimzoindian/QID themes and using them to construct a quiet position.

The Lasker variation of the QGD trades a bunch of minors off the board quickly, but White has a slight edge. However that's not so important, as you'll be approaching the endgame.

The Tarrasch QGD is a fair choice if you want an unbalanced game, since Black will often end up with an isolani. But I wouldn't play it to draw...

^i have been looking into lines of the queen's indian defense and i was going to try and play it against him, he is a really strong Nimzo player, so i don't want to get into that with him. Lasker variation might be a good try...

QGA

Steer towards what "you" know best -- let the game begin..  and compete without fear but with a healthy respect for your opponent. Luck has little place in chess, so I won't say good luck.. but instead, good thinking..

 This.