1)You want 3 rows- front row sitting legs crossed, second row on 2 knees, and the third row standing.
2) Twenty six players/coaches works out to 9-8-9. Always have even/odd or odd/even rows so that you can pose players in the 2nd and 3rd rows the gaps between players in front of them. Always gap, never stack.
3) Do not think of a pyramid, think of a U. You want your shortest players in the front row, tallest players in the back row, and the shortest players in each row in the middle, with the tallest players in each row at the ends.
4) ^^^ Reread #3....Players in the front row, and players in the center of each row are closer to the camera. Players in the back row, and players on the ends of each row are farther from the camera. The closer to the camera a player is, the larger they will appear, the farther away, the smaller they will appear. Building a pyramid will exaggerate the effect, making the tall players in the middle look even taller, and the short players on the ends look even smaller.
5) Line the players up shortest to tallest, place the first player in the center of each row, then add 1 player to each side, back and forth, until you have the correct number of players in that row. Do the same for the other 2 rows.
6) I shoot backlit whenever possible, and use adequate fill. Keep in mind that you will need 600-800ws of flash to adequately fill a group this size in full sun.You won't get the job done with an on camera flash.
7) If you have enough flash output, in full sun, at ISO100, set your camera on manual 1/250th sec at f11. However, you may want to adjust your shutter speed to compensate for either a bright, or a dark or shadowed background. Focus on the middle player in the second row.
Randy Brister, Cr.Photog.