The initial image release has some clues as to what the 17 combinations will be. See a brightened version below.
Upon close examination, here is my best guess (read- nothing official) at what each combination will be:
1. Black Pullover with Black Pants
WORN- First time on March 10th
Unfortunately I was right about the black pants. However, the white front panel on the cap was a pleasant surprise.
2. Camo Jersey with Gray Pants
This looks to be Adidas' abomination for 2015. In the limited view we have, it appears clearly to be a maroon and white camouflage jersey. Yuck. Here's Texas A&M's, to give you a better idea of what to expect it to look like.
3. Maroon 80s Jersey with White Pants
WORN- First time on February 15th
WORN- First time on February 22th with the Cream Hat. Technically the 18th combination; the 17 combinations graphic shows the Cream uni with a batting helmet, so it can be worn with both hats, only counting as 1 of the 17 combinations.
5. Maroon MS with 4th Pants
The Maroon MS jersey appears 4 times in the graphic above. Either there are two jerseys that look eerily similar, or this jersey is also worn with a fourth different pair of pants.
6. St Patrick's Day Jersey
WORN- First time on March 17th
7. Maroon 80s Jersey with Gray Pants
8. Black Pullover with White Pants.
WORN- First time on March 15th
9. Maroon MS with Pinstripe Pants.
WORN- First time on March 14th
10. Old School (Wool) Throwback
WORN- First time on February 14th
12. Camo Jersey with White Pants
WORN- First time on April 4th
13. Maroon MS with White Pants.
WORN- First time on February 13th
14. Gray Throwback Jersey
WORN- First time on March 24th
15. White MS Jersey
WORN- First time on February 21st
16. Maroon 80s with Pinstripe Pants
WORN- First time on February 28
This year's pinstripes feature a stripe running down the side of the pants, side of the jersey, and top of the shoulder, reminiscent of the Philadelphia Phillies in the 80's.
One notable exception is the White 80's jersey. The closest thing is the St Patrick's Day jersey. Maybe I was wrong on one of these and it will appear in its place.
The season begins TOMORROW AFTERNOON vs Cincinnati.